diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7844f35f..39386312 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,7 +19,7 @@
 - Packaged and uploaded to npm again, greatly simplifying distribution and installation of both Clusterio and plugins.
 - Added centralized logging for the cluster.
   All logs from both Clusterio and Factorio is stored in a shared log which can be inspected and queried.
-- Added remote save management with the ability to list, create, upload, download, delete and load saves for instances.
+- Added remote save management with the ability to list, create, rename, copy, upload, download, transfer, delete and load saves for instances.
 
 ### Features
 
diff --git a/packages/ctl/ctl.js b/packages/ctl/ctl.js
index b4cc3e5d..41454c3d 100755
--- a/packages/ctl/ctl.js
+++ b/packages/ctl/ctl.js
@@ -533,8 +533,11 @@ async function loadMapSettings(args) {
 	};
 }
 
-instanceCommands.add(new libCommand.Command({
-	definition: ["list-saves <instance>", "list saves on an instance", (yargs) => {
+const instanceSaveCommands = new libCommand.CommandTree({
+	name: "save", alias: ["s"], description: "Instance save management",
+});
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["list <instance>", "list saves on an instance", (yargs) => {
 		yargs.positional("instance", { describe: "Instance to list saves on", type: "string" });
 	}],
 	handler: async function(args, control) {
@@ -548,8 +551,8 @@ instanceCommands.add(new libCommand.Command({
 	},
 }));
 
-instanceCommands.add(new libCommand.Command({
-	definition: ["create-save <instance> [name]", "Create a new save on an instance", (yargs) => {
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["create <instance> [name]", "Create a new save on an instance", (yargs) => {
 		yargs.positional("instance", { describe: "Instance to create on", type: "string" });
 		yargs.positional("name", { describe: "Name of save to create.", type: "string", default: "world.zip" });
 		yargs.options({
@@ -573,8 +576,40 @@ instanceCommands.add(new libCommand.Command({
 	},
 }));
 
-instanceCommands.add(new libCommand.Command({
-	definition: ["upload-save <instance> <filepath>", "Upload a save to an instance", (yargs) => {
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["rename <instance> <old-name> <new-name>", "Rename a save on an instance", (yargs) => {
+		yargs.positional("instance", { describe: "Instance to rename save on", type: "string" });
+		yargs.positional("old-name", { describe: "Old name of save.", type: "string" });
+		yargs.positional("new-name", { describe: "New name of save.", type: "string" });
+	}],
+	handler: async function(args, control) {
+		let instanceId = await libCommand.resolveInstance(control, args.instance);
+		await libLink.messages.renameSave.send(control, {
+			instance_id: instanceId,
+			old_name: args.oldName,
+			new_name: args.newName,
+		});
+	},
+}));
+
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["copy <instance> <source> <destination>", "Copy a save on an instance", (yargs) => {
+		yargs.positional("instance", { describe: "Instance to copy save on", type: "string" });
+		yargs.positional("source", { describe: "Save to copy.", type: "string" });
+		yargs.positional("destination", { describe: "Name of copy.", type: "string" });
+	}],
+	handler: async function(args, control) {
+		let instanceId = await libCommand.resolveInstance(control, args.instance);
+		await libLink.messages.copySave.send(control, {
+			instance_id: instanceId,
+			source: args.source,
+			destination: args.destination,
+		});
+	},
+}));
+
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["upload <instance> <filepath>", "Upload a save to an instance", (yargs) => {
 		yargs.positional("instance", { describe: "Instance to upload to", type: "string" });
 		yargs.positional("filepath", { describe: "Path to save to upload", type: "string" });
 		yargs.options({
@@ -624,8 +659,36 @@ instanceCommands.add(new libCommand.Command({
 	},
 }));
 
-instanceCommands.add(new libCommand.Command({
-	definition: ["download-save <instance> <save>", "Download a save from an instance", (yargs) => {
+instanceSaveCommands.add(new libCommand.Command({
+	definition: [
+		"transfer <source-instance> <source-save> <target-instance> [target-save]",
+		"Transfer a save between instances",
+		(yargs) => {
+			yargs.positional("source-instance", { describe: "Instance to transfer save from", type: "string" });
+			yargs.positional("source-save", { describe: "Save to transfer.", type: "string" });
+			yargs.positional("target-instance", { describe: "Instance to transfer to", type: "string" });
+			yargs.positional("target-save", { describe: "Name to give transferred save.", type: "string" });
+			yargs.options({
+				"copy": { describe: "Copy instead of moving the save", type: "boolean", default: false },
+			});
+		},
+	],
+	handler: async function(args, control) {
+		let sourceInstanceId = await libCommand.resolveInstance(control, args.sourceInstance);
+		let targetInstanceId = await libCommand.resolveInstance(control, args.targetInstance);
+		let result = await libLink.messages.transferSave.send(control, {
+			instance_id: sourceInstanceId,
+			source_save: args.sourceSave,
+			target_instance_id: targetInstanceId,
+			target_save: args.targetSave || args.sourceSave,
+			copy: args.copy,
+		});
+		print(`Transferred as ${result.save} to ${args.targetInstance}.`);
+	},
+}));
+
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["download <instance> <save>", "Download a save from an instance", (yargs) => {
 		yargs.positional("instance", { describe: "Instance to download save from", type: "string" });
 		yargs.positional("save", { describe: "Save to download", type: "string" });
 	}],
@@ -669,8 +732,8 @@ instanceCommands.add(new libCommand.Command({
 	},
 }));
 
-instanceCommands.add(new libCommand.Command({
-	definition: ["delete-save <instance> <save>", "Delete a save from an instance", (yargs) => {
+instanceSaveCommands.add(new libCommand.Command({
+	definition: ["delete <instance> <save>", "Delete a save from an instance", (yargs) => {
 		yargs.positional("instance", { describe: "Instance to delete save from", type: "string" });
 		yargs.positional("save", { describe: "Save to delete", type: "string" });
 	}],
@@ -682,6 +745,7 @@ instanceCommands.add(new libCommand.Command({
 		});
 	},
 }));
+instanceCommands.add(instanceSaveCommands);
 
 instanceCommands.add(new libCommand.Command({
 	definition: ["export-data <instance>", "Export item icons and locale from instance", (yargs) => {
diff --git a/packages/lib/link/messages.js b/packages/lib/link/messages.js
index 06135ff4..dd187266 100644
--- a/packages/lib/link/messages.js
+++ b/packages/lib/link/messages.js
@@ -550,6 +550,28 @@ messages.createSave = new Request({
 	},
 });
 
+messages.renameSave = new Request({
+	type: "rename_save",
+	links: ["control-master", "master-slave"],
+	permission: "core.instance.save.rename",
+	forwardTo: "instance",
+	requestProperties: {
+		"old_name": { type: "string" },
+		"new_name": { type: "string" },
+	},
+});
+
+messages.copySave = new Request({
+	type: "copy_save",
+	links: ["control-master", "master-slave"],
+	permission: "core.instance.save.copy",
+	forwardTo: "instance",
+	requestProperties: {
+		"source": { type: "string" },
+		"destination": { type: "string" },
+	},
+});
+
 messages.deleteSave = new Request({
 	type: "delete_save",
 	links: ["control-master", "master-slave"],
@@ -573,6 +595,22 @@ messages.downloadSave = new Request({
 	},
 });
 
+messages.transferSave = new Request({
+	type: "transfer_save",
+	links: ["control-master", "master-slave"],
+	permission: "core.instance.save.transfer",
+	requestProperties: {
+		"instance_id": { type: "integer" },
+		"source_save": { type: "string" },
+		"target_instance_id": { type: "integer" },
+		"target_save": { type: "string" },
+		"copy": { type: "boolean" },
+	},
+	responseProperties: {
+		"save": { type: "string" },
+	},
+});
+
 messages.pullSave = new Request({
 	type: "pull_save",
 	links: ["master-slave"],
diff --git a/packages/lib/users.js b/packages/lib/users.js
index f5f59f1a..8432191b 100644
--- a/packages/lib/users.js
+++ b/packages/lib/users.js
@@ -379,7 +379,7 @@ definePermission({
 });
 definePermission({
 	name: "core.instance.save.list",
-	title: "List saves on instance",
+	title: "List saves",
 	description: "List the saves currently on the instance.",
 });
 definePermission({
@@ -389,22 +389,37 @@ definePermission({
 });
 definePermission({
 	name: "core.instance.save.create",
-	title: "Create new instance save",
+	title: "Create new save",
 	description: "Create new savegames on instances.",
 });
+definePermission({
+	name: "core.instance.save.rename",
+	title: "Rename save",
+	description: "Rename savegames on instances.",
+});
+definePermission({
+	name: "core.instance.save.copy",
+	title: "Copy save",
+	description: "Create copies of savegames on instances.",
+});
 definePermission({
 	name: "core.instance.save.delete",
-	title: "Delete instance save",
+	title: "Delete save",
 	description: "Delete savegames on instances.",
 });
 definePermission({
 	name: "core.instance.save.upload",
-	title: "Upload save to instance",
+	title: "Upload save",
 	description: "Upload savegames to instances.",
 });
+definePermission({
+	name: "core.instance.save.transfer",
+	title: "Transfer save",
+	description: "Transfer savegames between instances.",
+});
 definePermission({
 	name: "core.instance.save.download",
-	title: "Download save from instance",
+	title: "Download save",
 	description: "Download savegames from instances.",
 });
 definePermission({
diff --git a/packages/master/src/ControlConnection.js b/packages/master/src/ControlConnection.js
index 068076ee..05a31320 100644
--- a/packages/master/src/ControlConnection.js
+++ b/packages/master/src/ControlConnection.js
@@ -1,5 +1,6 @@
 "use strict";
 const jwt = require("jsonwebtoken");
+const events = require("events");
 
 const libConfig = require("@clusterio/lib/config");
 const libErrors = require("@clusterio/lib/errors");
@@ -159,10 +160,7 @@ class ControlConnection extends BaseConnection {
 
 	async getInstanceRequestHandler(message) {
 		let id = message.data.id;
-		let instance = this._master.instances.get(id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${id} does not exist`);
-		}
+		let instance = this._master.getRequestInstance(id);
 
 		return {
 			id,
@@ -249,11 +247,7 @@ class ControlConnection extends BaseConnection {
 	}
 
 	async deleteInstanceRequestHandler(message, request) {
-		let instance = this._master.instances.get(message.data.instance_id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${message.data.instance_id} does not exist`);
-		}
-
+		let instance = this._master.getRequestInstance(message.data.instance_id);
 		if (instance.config.get("instance.assigned_slave") !== null) {
 			await this.forwardRequestToInstance(message, request);
 		}
@@ -266,11 +260,7 @@ class ControlConnection extends BaseConnection {
 	}
 
 	async getInstanceConfigRequestHandler(message) {
-		let instance = this._master.instances.get(message.data.instance_id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${message.data.instance_id} does not exist`);
-		}
-
+		let instance = this._master.getRequestInstance(message.data.instance_id);
 		return {
 			serialized_config: instance.config.serialize("control"),
 		};
@@ -290,11 +280,7 @@ class ControlConnection extends BaseConnection {
 	}
 
 	async setInstanceConfigFieldRequestHandler(message) {
-		let instance = this._master.instances.get(message.data.instance_id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${message.data.instance_id} does not exist`);
-		}
-
+		let instance = this._master.getRequestInstance(message.data.instance_id);
 		if (message.data.field === "instance.assigned_slave") {
 			throw new libErrors.RequestError("instance.assigned_slave must be set through the assign-slave interface");
 		}
@@ -309,11 +295,7 @@ class ControlConnection extends BaseConnection {
 	}
 
 	async setInstanceConfigPropRequestHandler(message) {
-		let instance = this._master.instances.get(message.data.instance_id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${message.data.instance_id} does not exist`);
-		}
-
+		let instance = this._master.getRequestInstance(message.data.instance_id);
 		let { field, prop, value } = message.data;
 		instance.config.setProp(field, prop, value, "control");
 		await this.updateInstanceConfig(instance);
@@ -321,10 +303,7 @@ class ControlConnection extends BaseConnection {
 
 	async assignInstanceCommandRequestHandler(message, request) {
 		let { slave_id, instance_id } = message.data;
-		let instance = this._master.instances.get(instance_id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${instance_id} does not exist`);
-		}
+		let instance = this._master.getRequestInstance(instance_id);
 
 		// Check if target slave is connected
 		let newSlaveConnection;
@@ -395,6 +374,85 @@ class ControlConnection extends BaseConnection {
 		return { stream_id: stream.id };
 	}
 
+	async transferSaveRequestHandler(message, request) {
+		let { source_save, target_save, copy, instance_id, target_instance_id } = message.data;
+		if (copy) {
+			this.user.checkPermission("core.instance.save.copy");
+		} else if (source_save !== target_save) {
+			this.user.checkPermission("core.instance.save.rename");
+		}
+
+		if (instance_id === target_instance_id) {
+			throw new libErrors.RequestError("Source and target instance may not be the same");
+		}
+		let sourceInstance = this._master.getRequestInstance(instance_id);
+		let targetInstance = this._master.getRequestInstance(target_instance_id);
+		let sourceSlaveId = sourceInstance.config.get("instance.assigned_slave");
+		let targetSlaveId = targetInstance.config.get("instance.assigned_slave");
+		if (sourceSlaveId === null) {
+			throw new libErrors.RequestError("Source instance is not assigned a slave");
+		}
+		if (targetSlaveId === null) {
+			throw new libErrors.RequestError("Target instance is not assigned a slave");
+		}
+
+		// Let slave handle request if source and target is on the same slave.
+		if (sourceSlaveId === targetSlaveId) {
+			return await this.forwardRequestToInstance(message, request);
+		}
+
+		// Check connectivity
+		let sourceSlaveConnection = this._master.wsServer.slaveConnections.get(sourceSlaveId);
+		if (!sourceSlaveConnection || sourceSlaveConnection.closing) {
+			throw new libErrors.RequestError("Source slave is not connected to the master server");
+		}
+
+		let targetSlaveConnection = this._master.wsServer.slaveConnections.get(targetSlaveId);
+		if (!targetSlaveConnection || targetSlaveConnection.closing) {
+			throw new libErrors.RequestError("Target slave is not connected to the master server");
+		}
+
+		// Create stream to proxy from target to source
+		let stream = await routes.createProxyStream(this._master.app);
+		stream.events.on("timeout", () => {
+			if (stream.source) {
+				stream.source.destroy();
+			}
+			stream.events.emit("error", new libErrors.RequestError("Timed out establishing transfer stream"));
+		});
+
+		// Ignore errors if not listening for them to avoid crash.
+		stream.events.on("error", () => { /* ignore */ });
+
+		// Establish push from source slave to stream, this is done first to
+		// ensure the file size is known prior to the target slave pull.
+		await Promise.all([
+			this._master.forwardRequestToInstance(libLink.messages.pushSave, {
+				instance_id,
+				stream_id: stream.id,
+				save: source_save,
+			}),
+			events.once(stream.events, "source"),
+		]);
+
+		// Establish pull from target slave to stream and wait for completion.
+		let result = await this._master.forwardRequestToInstance(libLink.messages.pullSave, {
+			instance_id: target_instance_id,
+			stream_id: stream.id,
+			filename: target_save,
+		});
+
+		// Delete source save if this is not a copy
+		if (!copy) {
+			await this._master.forwardRequestToInstance(libLink.messages.deleteSave, {
+				instance_id,
+				save: source_save,
+			});
+		}
+
+		return { save: result.save };
+	}
+
 	async setLogSubscriptionsRequestHandler(message) {
 		this.logSubscriptions = message.data;
 		this.updateLogSubscriptions();
diff --git a/packages/master/src/Master.js b/packages/master/src/Master.js
index 3d83e849..863bf48a 100644
--- a/packages/master/src/Master.js
+++ b/packages/master/src/Master.js
@@ -424,6 +424,21 @@ class Master {
 		}
 	}
 
+	/**
+	 * Get instance by ID for a request
+	 *
+	 * @param {number} instanceId - ID of instance to get.
+	 * @returns {object} instance
+	 * @throws {module:lib/errors.RequestError} if the instance does not exist.
+	 */
+	getRequestInstance(instanceId) {
+		let instance = this.instances.get(instanceId);
+		if (!instance) {
+			throw new libErrors.RequestError(`Instance with ID ${instanceId} does not exist`);
+		}
+		return instance;
+	}
+
 	addInstanceHooks(instance) {
 		instance.config.on("fieldChanged", (group, field, prev) => {
 			if (group.name === "instance" && field === "name") {
@@ -608,11 +623,7 @@ class Master {
 	 * @returns {object} data returned from the request.
 	 */
 	async forwardRequestToInstance(request, data) {
-		let instance = this.instances.get(data.instance_id);
-		if (!instance) {
-			throw new libErrors.RequestError(`Instance with ID ${data.instance_id} does not exist`);
-		}
-
+		let instance = this.getRequestInstance(data.instance_id);
 		let slaveId = instance.config.get("instance.assigned_slave");
 		if (slaveId === null) {
 			throw new libErrors.RequestError("Instance is not assigned to a slave");
diff --git a/packages/slave/slave.js b/packages/slave/slave.js
index f4916ff8..db3d0281 100755
--- a/packages/slave/slave.js
+++ b/packages/slave/slave.js
@@ -1077,6 +1077,15 @@ function checkFilename(name) {
 	}
 }
 
+function checkRequestSaveName(name) {
+	try {
+		checkFilename(name);
+	} catch (err) {
+		throw new libErrors.RequestError(`Save name ${err.message}`);
+	}
+}
+
+
 /**
  * Handles running the slave
  *
@@ -1351,6 +1360,14 @@ class Slave extends libLink.Link {
 		}
 	}
 
+	getRequestInstanceInfo(instanceId) {
+		let instanceInfo = this.instanceInfos.get(instanceId);
+		if (!instanceInfo) {
+			throw new libErrors.RequestError(`Instance with ID ${instanceId} does not exist`);
+		}
+		return instanceInfo;
+	}
+
 	/**
 	 * Initialize and connect an unloaded instance
 	 *
@@ -1358,11 +1375,7 @@ class Slave extends libLink.Link {
 	 * @returns {module:slave/slave~InstanceConnection} connection to instance.
 	 */
 	async _connectInstance(instanceId) {
-		let instanceInfo = this.instanceInfos.get(instanceId);
-		if (!instanceInfo) {
-			throw new libErrors.RequestError(`Instance with ID ${instanceId} does not exist`);
-		}
-
+		let instanceInfo = this.getRequestInstanceInfo(instanceId);
 		if (this.instanceConnections.has(instanceId)) {
 			throw new libErrors.RequestError(`Instance with ID ${instanceId} is running`);
 		}
@@ -1424,11 +1437,7 @@ class Slave extends libLink.Link {
 			return await request.send(instanceConnection, message.data);
 		}
 
-		let instanceInfo = this.instanceInfos.get(instanceId);
-		if (!instanceInfo) {
-			throw new libErrors.RequestError(`Instance with ID ${instanceId} does not exist`);
-		}
-
+		let instanceInfo = this.getRequestInstanceInfo(instanceId);
 		return {
 			list: await Instance.listSaves(path.join(instanceInfo.path, "saves"), null),
 		};
@@ -1440,6 +1449,85 @@ class Slave extends libLink.Link {
 		await request.send(instanceConnection, message.data);
 	}
 
+	async renameSaveRequestHandler(message) {
+		let { instance_id, old_name, new_name } = message.data;
+		checkRequestSaveName(old_name);
+		checkRequestSaveName(new_name);
+		let instanceInfo = this.getRequestInstanceInfo(instance_id);
+		try {
+			await fs.move(
+				path.join(instanceInfo.path, "saves", old_name),
+				path.join(instanceInfo.path, "saves", new_name),
+				{ overwrite: false },
+			);
+		} catch (err) {
+			if (err.code === "ENOENT") {
+				throw new libErrors.RequestError(`${old_name} does not exist`);
+			}
+			throw err;
+		}
+		await this.sendSaveListUpdate(instance_id, path.join(instanceInfo.path, "saves"));
+	}
+
+	async copySaveRequestHandler(message) {
+		let { instance_id, source, destination } = message.data;
+		checkRequestSaveName(source);
+		checkRequestSaveName(destination);
+		let instanceInfo = this.getRequestInstanceInfo(instance_id);
+		try {
+			await fs.copy(
+				path.join(instanceInfo.path, "saves", source),
+				path.join(instanceInfo.path, "saves", destination),
+				{ overwrite: false, errorOnExist: true },
+			);
+		} catch (err) {
+			if (err.code === "ENOENT") {
+				throw new libErrors.RequestError(`${old_name} does not exist`);
+			}
+			throw err;
+		}
+		await this.sendSaveListUpdate(instance_id, path.join(instanceInfo.path, "saves"));
+	}
+
+	async transferSaveRequestHandler(message) {
+		let { source_save, target_save, copy, instance_id, target_instance_id } = message.data;
+		checkRequestSaveName(source_save);
+		checkRequestSaveName(target_save);
+		let sourceInstanceInfo = this.getRequestInstanceInfo(instance_id);
+		let targetInstanceInfo = this.getRequestInstanceInfo(target_instance_id);
+
+		// For consistency with remote transfer initiated through pullSave the
+		// target is renamed if it already exists.
+		target_save = await libFileOps.findUnusedName(
+			path.join(targetInstanceInfo.path, "saves"), target_save, ".zip"
+		);
+
+		try {
+			if (copy) {
+				await fs.copy(
+					path.join(sourceInstanceInfo.path, "saves", source_save),
+					path.join(targetInstanceInfo.path, "saves", target_save),
+					{ overwrite: true },
+				);
+			} else {
+				await fs.move(
+					path.join(sourceInstanceInfo.path, "saves", source_save),
+					path.join(targetInstanceInfo.path, "saves", target_save),
+					{ overwrite: true },
+				);
+			}
+		} catch (err) {
+			if (err.code === "ENOENT") {
+				throw new libErrors.RequestError(`${source_save} does not exist`);
+			}
+			throw err;
+		}
+		await this.sendSaveListUpdate(instance_id, path.join(sourceInstanceInfo.path, "saves"));
+		await this.sendSaveListUpdate(target_instance_id, path.join(targetInstanceInfo.path, "saves"));
+
+		return { save: target_save };
+	}
+
 	async sendSaveListUpdate(instance_id, savesDir) {
 		let instanceConnection = this.instanceConnections.get(instance_id);
 		let saveList;
@@ -1454,15 +1542,8 @@ class Slave extends libLink.Link {
 
 	async deleteSaveRequestHandler(message) {
 		let { instance_id, save } = message.data;
-		try {
-			checkFilename(save);
-		} catch (err) {
-			throw new libErrors.RequestError(`Save name ${err.message}`);
-		}
-		let instanceInfo = this.instanceInfos.get(instance_id);
-		if (!instanceInfo) {
-			throw new libErrors.RequestError(`Instance with ID ${instance_id} does not exist`);
-		}
+		checkRequestSaveName(save);
+		let instanceInfo = this.getRequestInstanceInfo(instance_id);
 
 		try {
 			await fs.unlink(path.join(instanceInfo.path, "saves", save));
@@ -1477,15 +1558,8 @@ class Slave extends libLink.Link {
 
 	async pullSaveRequestHandler(message) {
 		let { instance_id, stream_id, filename } = message.data;
-		try {
-			checkFilename(filename);
-		} catch (err) {
-			throw new libErrors.RequestError(`Save name ${err.message}`);
-		}
-		let instanceInfo = this.instanceInfos.get(instance_id);
-		if (!instanceInfo) {
-			throw new libErrors.RequestError(`Instance with ID ${instance_id} does not exist`);
-		}
+		checkRequestSaveName(filename);
+		let instanceInfo = this.getRequestInstanceInfo(instance_id);
 
 		let url = new URL(this.config.get("slave.master_url"));
 		url.pathname += `api/stream/${stream_id}`;
@@ -1528,15 +1602,8 @@ class Slave extends libLink.Link {
 
 	async pushSaveRequestHandler(message) {
 		let { instance_id, stream_id, save } = message.data;
-		try {
-			checkFilename(save);
-		} catch (err) {
-			throw new libErrors.RequestError(`Save name ${err.message}`);
-		}
-		let instanceInfo = this.instanceInfos.get(instance_id);
-		if (!instanceInfo) {
-			throw new libErrors.RequestError(`Instance with ID ${instance_id} does not exist`);
-		}
+		checkRequestSaveName(save);
+		let instanceInfo = this.getRequestInstanceInfo(instance_id);
 
 		let content;
 		try {
diff --git a/packages/web_ui/src/components/SavesList.jsx b/packages/web_ui/src/components/SavesList.jsx
index 72c0554a..133cffac 100644
--- a/packages/web_ui/src/components/SavesList.jsx
+++ b/packages/web_ui/src/components/SavesList.jsx
@@ -1,5 +1,8 @@
 import React, { useContext, useState } from "react";
-import { Button, List, Popconfirm, Progress, Space, Table, Tooltip, Upload } from "antd";
+import {
+	message, Button, Checkbox, Form, Input, List, Modal,
+	Popconfirm, Progress, Select, Space, Table, Tooltip, Upload,
+} from "antd";
 import CaretLeftOutlined from "@ant-design/icons/CaretLeftOutlined";
 import LeftOutlined from "@ant-design/icons/LeftOutlined";
 
@@ -9,10 +12,173 @@ import { useAccount } from "../model/account";
 import ControlContext from "./ControlContext";
 import CreateSaveModal from "./CreateSaveModal";
 import SectionHeader from "./SectionHeader";
+import { useInstanceList } from "../model/instance";
 import { useSaves } from "../model/saves";
 import { notifyErrorHandler } from "../util/notify";
 
 
+function RenameModal(props) {
+	let control = useContext(ControlContext);
+	let [visible, setVisible] = useState(false);
+	let [form] = Form.useForm();
+
+	return <>
+		<Button disabled={props.disabled} onClick={() => setVisible(true)}>Rename</Button>
+		<Modal
+			title="Rename save"
+			okText="Rename"
+			visible={visible}
+			onOk={() => form.submit()}
+			onCancel={() => setVisible(false)}
+		>
+			<Form
+				form={form}
+				layout="vertical"
+				initialValues={{ newName: props.save.name }}
+				onFinish={values => {
+					libLink.messages.renameSave.send(control,
+						{ instance_id: props.instanceId, old_name: props.save.name, new_name: values.newName }
+					).then(() => {
+						setVisible(false);
+						form.resetFields();
+					}).catch(notifyErrorHandler("Error renaming save"));
+				}}
+			>
+				<Form.Item
+					name="newName"
+					label="New name"
+					rules={[{ required: true, message: "New name is required" }]}
+				>
+					<Input autoFocus />
+				</Form.Item>
+			</Form>
+		</Modal>
+	</>;
+}
+
+function CopyModal(props) {
+	let control = useContext(ControlContext);
+	let [visible, setVisible] = useState(false);
+	let [form] = Form.useForm();
+
+	return <>
+		<Button disabled={props.disabled} onClick={() => setVisible(true)}>Copy</Button>
+		<Modal
+			title="Copy save"
+			okText="Copy"
+			visible={visible}
+			onOk={() => form.submit()}
+			onCancel={() => setVisible(false)}
+		>
+			<Form
+				form={form}
+				layout="vertical"
+				initialValues={{ newName: props.save.name }}
+				onFinish={values => {
+					libLink.messages.copySave.send(control,
+						{ instance_id: props.instanceId, source: props.save.name, destination: values.newName }
+					).then(() => {
+						setVisible(false);
+						form.resetFields();
+					}).catch(notifyErrorHandler("Error copying save"));
+				}}
+			>
+				<Form.Item
+					name="newName"
+					label="New name"
+					rules={[{ required: true, message: "New name is required" }]}
+				>
+					<Input autoFocus />
+				</Form.Item>
+			</Form>
+		</Modal>
+	</>;
+}
+
+function TransferModal(props) {
+	let account = useAccount();
+	let control = useContext(ControlContext);
+	let [visible, setVisible] = useState(false);
+	let [form] = Form.useForm();
+	let [instanceList] = useInstanceList();
+
+	return <>
+		<Button disabled={props.disabled} onClick={() => setVisible(true)}>Transfer</Button>
+		<Modal
+			title="Transfer save"
+			okText="Transfer"
+			visible={visible}
+			onOk={() => form.submit()}
+			onCancel={() => setVisible(false)}
+			destroyOnClose
+		>
+			<Form
+				form={form}
+				labelCol={{ span: 6 }}
+				wrapperCol={{ span: 18 }}
+				initialValues={{ transferredName: props.save.name, copy: false }}
+				onFinish={values => {
+					setVisible(false);
+					let hide = message.loading("Transferring save...", 0);
+					libLink.messages.transferSave.send(control, {
+						instance_id: props.instanceId,
+						source_save: props.save.name,
+						target_instance_id: values.targetInstanceId,
+						target_save: values.transferredName || props.save.name,
+						copy: values.copy,
+					}).then(() => {
+						message.success("Transfer complete");
+						form.resetFields();
+					}).catch(
+						notifyErrorHandler("Error transfering save")
+					).finally(() => hide());
+				}}
+			>
+				<Form.Item
+					name="targetInstanceId"
+					label="Target Instance"
+					rules={[{ required: true, message: "Target Instance is required" }]}
+				>
+					<Select
+						autoFocus
+						showSearch
+						filterOption={(input, option) => option.title.toLowerCase().indexOf(input.toLowerCase()) >= 0}
+					>
+						{instanceList.filter(
+							instance => instance["id"] !== props.instanceId
+						).map((instance) => <Select.Option
+							key={instance["id"]}
+							value={instance["id"]}
+							title={instance["name"]}
+							disabled={["unassigned", "unknown"].includes(instance["status"])}
+						>
+							{instance["name"]}
+							{instance["status"] === "unassigned" && " (unassigned)"}
+							{instance["status"] === "unknown" && " (offline)"}
+						</Select.Option>)}
+					</Select>
+				</Form.Item>
+				<Form.Item
+					name="transferredName"
+					label="Transferred name"
+					disabled={!account.hasAnyPermission("core.instance.save.rename", "core.instance.save.copy")}
+				>
+					<Input />
+				</Form.Item>
+				<Form.Item
+					name="copy"
+					valuePropName="checked"
+					label="Copy"
+					tooltip="Copy instead of moving the save to the new instance."
+					disabled={!account.hasPermission("core.instance.save.copy")}
+				>
+					<Checkbox />
+				</Form.Item>
+			</Form>
+		</Modal>
+	</>;
+}
+
 function formatBytes(bytes) {
 	if (bytes === 0) {
 		return "0 Bytes";
@@ -81,6 +247,12 @@ export default function SavesList(props) {
 						);
 					}}
 				>Load save</Button>}
+				{account.hasPermission("core.instance.save.rename") && <RenameModal
+					disabled={slaveOffline} instanceId={props.instance.id} save={save}
+				/>}
+				{account.hasPermission("core.instance.save.copy") && <CopyModal
+					disabled={slaveOffline} instanceId={props.instance.id} save={save}
+				/>}
 				{account.hasPermission("core.instance.save.download") && <Button
 					disabled={slaveOffline}
 					onClick={() => {
@@ -95,6 +267,9 @@ export default function SavesList(props) {
 						);
 					}}
 				>Download</Button>}
+				{account.hasPermission("core.instance.save.transfer") && <TransferModal
+					disabled={slaveOffline} instanceId={props.instance.id} save={save}
+				/>}
 				{account.hasPermission("core.instance.save.delete") && <Popconfirm
 					title="Permanently delete save?"
 					okText="Delete"
diff --git a/test/integration/clusterio.js b/test/integration/clusterio.js
index b066d15f..edeb4574 100644
--- a/test/integration/clusterio.js
+++ b/test/integration/clusterio.js
@@ -3,6 +3,7 @@ const assert = require("assert").strict;
 const fs = require("fs-extra");
 const path = require("path");
 const events = require("events");
+const phin = require("phin");
 
 const libLink = require("@clusterio/lib/link");
 const libUsers = require("@clusterio/lib/users");
@@ -25,6 +26,24 @@ async function checkInstanceStatus(id, status) {
 	assert.equal(instances.get(44).status, status, "incorrect instance status");
 }
 
+async function uploadSave(instanceId, name, content) {
+	return await phin({
+		url: `https://localhost:4443/api/upload-save?instance_id=${instanceId}&filename=${name}`,
+		method: "POST",
+		core: { rejectUnauthorized: false },
+		headers: {
+			"X-Access-Token": controlToken,
+			"Content-Type": "application/zip",
+			"Content-Length": String(content.length),
+		},
+		data: content,
+	});
+}
+
+async function deleteSave(instanceId, save) {
+	await libLink.messages.deleteSave.send(getControl(), { instance_id: instanceId, save });
+}
+
 describe("Integration of Clusterio", function() {
 	describe("clusteriomaster", function() {
 		describe("bootstrap generate-user-token", function() {
@@ -115,10 +134,14 @@ describe("Integration of Clusterio", function() {
 				let config = "alt-slave-config.json";
 				let configPath = path.join("temp", "test", config);
 				await fs.remove(configPath);
+				await fs.remove(path.join("temp", "test", "alt-instances"));
 				await execCtl(`slave create-config --id 5 --name alt-slave --generate-token --output ${config}`);
 				await exec(
 					`node ../../packages/slave --config ${config} config set slave.tls_ca ../../test/file/tls/cert.pem`
 				);
+				await exec(
+					`node ../../packages/slave --config ${config} config set slave.instances_directory alt-instances`
+				);
 
 				let slaveProcess;
 				try {
@@ -250,11 +273,11 @@ describe("Integration of Clusterio", function() {
 			});
 		});
 
-		describe("instance create-save", function() {
+		describe("instance save create", function() {
 			it("creates a save", async function() {
 				slowTest(this);
 				getControl().saveListUpdates = [];
-				await execCtl("instance create-save test");
+				await execCtl("instance save create test");
 				await checkInstanceStatus(44, "stopped");
 			});
 		});
@@ -266,10 +289,10 @@ describe("Integration of Clusterio", function() {
 			});
 		});
 
-		describe("instance list-saves", function() {
+		describe("instance save list", function() {
 			it("lists the created save", async function() {
 				slowTest(this);
-				let result = await execCtl("instance list-saves test");
+				let result = await execCtl("instance save list test");
 				assert(/world\.zip/.test(result.stdout), "world.zip not present in list save output");
 			});
 		});
@@ -530,10 +553,10 @@ describe("Integration of Clusterio", function() {
 			});
 		});
 
-		describe("instance upload-save", function() {
+		describe("instance save upload", function() {
 			it("should upload a zip file", async function() {
 				await fs.outputFile(path.join("temp", "test", "upload.zip"), "a test");
-				await execCtl("instance upload-save 44 upload.zip");
+				await execCtl("instance save upload 44 upload.zip");
 				assert(
 					await fs.pathExists(path.join("temp", "test", "instances", "test", "saves", "upload.zip")),
 					"file not uploaded to saves directory"
@@ -541,42 +564,198 @@ describe("Integration of Clusterio", function() {
 			});
 			it("should reject non-zip files", async function() {
 				await fs.outputFile(path.join("temp", "test", "invalid"), "a test");
-				await assert.rejects(execCtl("instance upload-save 44 invalid"));
+				await assert.rejects(execCtl("instance save upload 44 invalid"));
 			});
 			it("should reject path traversal attacks", async function() {
 				await fs.outputFile(path.join("temp", "test", "upload.zip"), "a test");
-				await assert.rejects(execCtl("instance upload-save 44 upload.zip --name ../traversal.zip"));
+				await assert.rejects(execCtl("instance save upload 44 upload.zip --name ../traversal.zip"));
 			});
 		});
 
-		describe("instance download-save", function() {
+		describe("instance save download", function() {
 			it("should download a save", async function() {
 				await fs.remove(path.join("temp", "test", "upload.zip"));
-				await execCtl("instance download-save 44 upload.zip");
+				await execCtl("instance save download 44 upload.zip");
 				assert(await fs.pathExists(path.join("temp", "test", "upload.zip")));
 			});
 			it("should error if save does not exist", async function() {
-				await assert.rejects(execCtl("instance download-save 44 invalid"));
+				await assert.rejects(execCtl("instance save download 44 invalid"));
 			});
 			it("should error on path traversal attacks", async function() {
-				await assert.rejects(execCtl("instance download-save 44 ../factorio-current.log"));
+				await assert.rejects(execCtl("instance save download 44 ../factorio-current.log"));
 			});
 		});
 
-		describe("instance delete-save", function() {
+		describe("instance save copy", function() {
+			it("copy a save file", async function() {
+				await execCtl("instance save copy 44 upload.zip copy.zip");
+				assert(await fs.pathExists(path.join("temp", "test", "instances", "test", "saves", "copy.zip")));
+			});
+			it("should error if destination exist", async function() {
+				await assert.rejects(execCtl("instance save copy 44 upload.zip copy.zip"));
+			});
+			it("should error if source does not exist", async function() {
+				await assert.rejects(execCtl("instance save copy 44 not-here.zip invalid.zip"));
+			});
+			it("should reject path traversal attacks", async function() {
+				await assert.rejects(execCtl("instance save copy 44 upload.zip ../traversal.zip"));
+				await assert.rejects(execCtl("instance save copy 44 ../saves/upload.zip traversal.zip "));
+			});
+		});
+
+		describe("instance save rename", function() {
+			it("rename a save file", async function() {
+				await execCtl("instance save rename 44 copy.zip rename.zip");
+				assert(!await fs.pathExists(path.join("temp", "test", "instances", "test", "saves", "copy.zip")));
+				assert(await fs.pathExists(path.join("temp", "test", "instances", "test", "saves", "rename.zip")));
+			});
+			it("should error if new name exist", async function() {
+				await assert.rejects(execCtl("instance save rename 44 upload.zip rename.zip"));
+			});
+			it("should error if old name does not exist", async function() {
+				await assert.rejects(execCtl("instance save rename 44 not-here.zip invalid.zip"));
+			});
+			it("should reject path traversal attacks", async function() {
+				await assert.rejects(execCtl("instance save rename 44 upload.zip ../traversal.zip"));
+				await assert.rejects(execCtl("instance save rename 44 ../saves/upload.zip traversal.zip "));
+			});
+		});
+
+		describe("instance save transfer", function() {
+			before(async function() {
+				slowTest(this);
+				await execCtl("instance create spam --id 66");
+				await execCtl("instance assign spam 4");
+				await execCtl("instance create unassign --id 77");
+			});
+			after(async function() {
+				await execCtl("instance delete spam");
+			});
+			for (let remote of [false, true]) {
+				let pri = 44;
+				let sec = remote ? 99 : 66;
+				let priSaves = path.join("temp", "test", "instances", "test", "saves");
+				let secSaves = remote
+					? path.join("temp", "test", "alt-instances", "alt-test", "saves")
+					: path.join("temp", "test", "instances", "spam", "saves")
+				;
+				describe(remote ? "remote" : "local", function() {
+					if (remote) {
+						let slaveProcess;
+						before(async function() {
+							// On windows there's currently no way to automate graceful shutdown of the slave
+							// process as CTRL+C is some weird terminal thing and SIGINT isn't a thing.
+							if (process.platform === "win32") {
+								this.skip();
+							}
+							slowTest(this);
+							// Reuse from the clusterioslave test
+							let config = "alt-slave-config.json";
+							slaveProcess = await spawn(
+								"alt-slave:", `node ../../packages/slave run --config ${config}`, /Started slave/
+							);
+						});
+						after(async function() {
+							if (slaveProcess) {
+								slaveProcess.kill("SIGINT");
+								await events.once(slaveProcess, "exit");
+							}
+						});
+					}
+					it("should transfers a save", async function() {
+						await uploadSave(pri, "transfer.zip", "transfer.zip");
+						await execCtl(`instance save transfer ${pri} transfer.zip ${sec}`);
+						assert(!await fs.pathExists(path.join(priSaves, "transfer.zip")), "save still at pri");
+						assert(await fs.pathExists(path.join(secSaves, "transfer.zip")), "save not at sec");
+						await deleteSave(sec, "transfer.zip");
+					});
+					it("should support rename", async function() {
+						await uploadSave(pri, "transfer.zip", "transfer.zip");
+						await execCtl(`instance save transfer ${pri} transfer.zip ${sec} rename.zip`);
+						assert(!await fs.pathExists(path.join(priSaves, "transfer.zip")), "save still at pri");
+						assert(await fs.pathExists(path.join(secSaves, "rename.zip")), "save not at sec");
+						await deleteSave(sec, "rename.zip");
+					});
+					it("should auto-rename if target exists", async function() {
+						await uploadSave(pri, "transfer.zip", "transfer.zip");
+						await uploadSave(sec, "transfer.zip", "transfer.zip");
+						await execCtl(`instance save transfer ${pri} transfer.zip ${sec}`);
+						assert(!await fs.pathExists(path.join(priSaves, "transfer.zip")), "save still at pri");
+						assert(await fs.pathExists(path.join(secSaves, "transfer-2.zip")), "save not at sec");
+						await deleteSave(sec, "transfer.zip");
+						await deleteSave(sec, "transfer-2.zip");
+					});
+					it("should copy when using --copy", async function() {
+						await uploadSave(pri, "transfer.zip", "transfer.zip");
+						await execCtl(`instance save transfer ${pri} transfer.zip ${sec} --copy`);
+						assert(await fs.pathExists(path.join(priSaves, "transfer.zip")), "save not at pri");
+						assert(await fs.pathExists(path.join(secSaves, "transfer.zip")), "save not at sec");
+						await deleteSave(pri, "transfer.zip");
+						await deleteSave(sec, "transfer.zip");
+					});
+					it("should fail if save does not exist", async function() {
+						await assert.rejects(execCtl(`instance save transfer ${pri} not-here.zip ${sec}`));
+					});
+					it("should fail if source save name is invalid", async function() {
+						await assert.rejects(execCtl(`instance save transfer ${pri} nul 111`));
+					});
+					it("should fail if target save name is invalid", async function() {
+						await uploadSave(pri, "transfer.zip", "transfer.zip");
+						await assert.rejects(execCtl(`instance save transfer ${pri} transfer.zip 111 nul`));
+						await deleteSave(pri, "transfer.zip");
+					});
+					it("should reject path traversal of source save", async function() {
+						await assert.rejects(execCtl(`instance save transfer ${pri} ../saves/transfer.zip 111`));
+					});
+					it("should reject path traversal of target save", async function() {
+						await uploadSave(pri, "transfer.zip", "transfer.zip");
+						await assert.rejects(
+							execCtl(`instance save transfer ${pri} transfer.zip 111 ../saves/transfer.zip`)
+						);
+						await deleteSave(pri, "transfer.zip");
+					});
+					if (!remote) {
+						it("should fail if source and target instance is the same instance", async function() {
+							await uploadSave(pri, "transfer.zip", "transfer.zip");
+							await assert.rejects(execCtl(`instance save transfer ${pri} transfer.zip ${pri}`));
+							await deleteSave(pri, "transfer.zip");
+						});
+						it("should fail if source instance does not exist", async function() {
+							await assert.rejects(execCtl(`instance save transfer 111 not-here.zip ${sec}`));
+						});
+						it("should fail if target instance does not exist", async function() {
+							await uploadSave(pri, "transfer.zip", "transfer.zip");
+							await assert.rejects(execCtl(`instance save transfer ${pri} transfer.zip 111`));
+							await deleteSave(pri, "transfer.zip");
+						});
+						it("should fail if source instance is not assigned", async function() {
+							await assert.rejects(execCtl(`instance save transfer 77 transfer.zip ${pri}`));
+						});
+						it("should fail if target instance is not assigned", async function() {
+							await uploadSave(pri, "transfer.zip", "transfer.zip");
+							await assert.rejects(execCtl(`instance save transfer ${pri} transfer.zip 77`));
+							await deleteSave(pri, "transfer.zip");
+						});
+					}
+				});
+			}
+
+		});
+
+		describe("instance save delete", function() {
 			it("should delete a save", async function() {
-				await execCtl("instance delete-save 44 upload.zip");
+				await execCtl("instance save delete 44 upload.zip");
 				assert(
 					!await fs.pathExists(path.join("temp", "test", "instances", "test", "saves", "upload.zip")),
 					"file not deleted"
 				);
 			});
 			it("should error if save does not exist", async function() {
-				await assert.rejects(execCtl("instance delete-save 44 upload.zip"));
+				await assert.rejects(execCtl("instance save delete 44 upload.zip"));
 			});
 			it("should error on path traversal attacks", async function() {
 				await fs.outputFile(path.join("temp", "test", "upload.zip"), "a test");
-				await assert.rejects(execCtl("instance delete-save 44 ../../upload.zip"));
+				await assert.rejects(execCtl("instance save delete 44 ../../upload.zip"));
 			});
 		});
 
diff --git a/test/integration/index.js b/test/integration/index.js
index b254e05f..f8c40f46 100644
--- a/test/integration/index.js
+++ b/test/integration/index.js
@@ -109,7 +109,8 @@ let slaveConfigPath = path.join("temp", "test", "config-slave.json");
 let controlConfigPath = path.join("temp", "test", "config-control.json");
 
 async function exec(command, options = {}) {
-	console.log(command);
+	// Uncomment to show commands run in tests
+	// console.log(command);
 	options = { cwd: path.join("temp", "test"), ...options };
 	return await util.promisify(child_process.exec)(command, options);
 }