MutalBackup


download MutalBackup Download MutalBackup v1.1 (4 MB)


See changelog

This software is a free alternative to commercial online backups. Make backup onto your friends computer or backup to computers in your home network.

It is a real backup, not just a file copy, meaning you can recover from any point in time. E.g. find a file you deleted 1 year ago. Dropbox (free edition) only stores deleted files and version history 30 days back.

All files and paths are encrypted (128 bit AES) before leaving the computer so destination could be anywhere. Add multiple friends to gain redundant backup. Each host decides how much disk space a friend may use.

The program is both a client and a server so connections will be attempted in both directions. The backup will transfer files compressed, de-duplicated and encrypted to your friend's location. If the connection is dropped or your friend is offline it will continue when connected again.

Quick Start

First you link with your friend (your friend will do the same). You'll have to user the same access keys. Remember to only share an access key with one friend.

Create a backup. Choose friend, add folders and pick a password for encryption


Press start

Technical info


changelog

	1.1 (2020-03-17)
		- Fixed "Exclude hidden files" not working with folders (Windows only)
		- Fixed recover UI bug (empty file tree) if backup pointed to a root directory
		- Fixed some schedules not working
		- Fixed recover didn't respect destination folder on Linux
		- Added flag for recovering to orginal location
		- Removed one of the access keys. Now only one access key is needed when connecting to a friend.
		- Access key must be unique. Added button to generate access key 
		- Improved information when recovering files
		- Improved live log
		- Improved logon failure reporting (protocol change, you must update both ends)
		- Improved dead connection detection
		- Improved check backup performance
		
	1.00 (2019-03-09)
		- Changed name to MutalBackup
		- Added backup restore from new installation (e.g. after a harddisk crash) 
		- Added backup strategi ranging from "only check modify date" to "hash every file every time"
		- Added backup scheduling ranging from hourly to monthly
		- Added file size when browsing files to restore
		- Added feature to clone an existing backup
		- Added feature to run MutalBackup on start up (Windows only)
		- Improved hash persisting performance
		- Improved performance on backup delete
		- Improved performance when restoring
		- Improved retry logic when loosing communication packages
		- Improved keep alive ping / connection checks
		- Changed default file read throttle to 2 MB/s		
		- Fixed error in UI where file tree representation was not correct when restoring
		- Breaking protocol changes (you must update both ends)		
		
	0.28 (2017-11-07)
		- Improved backup/friend delete. Recalculates free bytes after delete
		- Added alder32 check to detect corrupted data in backup
		- Breaking protocol changes (you must update both ends)
		- Improved dead connection detection
		- Several UI improvements e.g. window size will be restored after restart
		- Setting to prevent system hibernate
		
	0.27 (2017-08-10)
		- Passwords are encrypted on disk. User should input password again
		- UI for file recovering is now able to recover back in time. Output directory can be changed
		
	0.26 (2017-07-28)
		- Breaking changes in storage format and protocol
		- 20% smaller jar file. Removed xstream using JAXB instead
		- Default backup throttle at 1 MB/s
	
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