Here I recommend a free file sync tool: DirSync Pro which works under Linux, Windows and macOS. Although it based on JAVA, it is still amazing fast when sync files between local disk and USB hard disk.
Download link:
DirSync Pro is designed and developed by O. Givi.
DirSync Pro is based on DirSync (Directory Synchronize) by E. Gerber and F. Gerbig.
(C) 2008-2012 O. Givi
(C) 2002-2008 by E. Gerber, F. Gerbig and T. Groetzner.
Thanks to M. Lux, G. Noorlander, T. Brixel, D. Caravana, R. Williams, and D. Petre.
This program comes with ABSOLUTELY NO WARRANTY; It is licensed according to GPL v3.
Features
- Synchronization
- Powerful synchronization algorithm.
- Bi-directional (Two way) and mono-directional (One way) synchronization mode.
- Predefined synchronzation modes for mostly used synchronizations
- Mirror A -> B (incremental): Mirrors new and modified files from A to B.
- Mirror B -> A (incremental): Mirrors new and modified files from B to A.
- Synchronize A <-> B (incremental): Mirrors new and modified files in directories A and B to each other.
- Backup A -> B (full): Makes a full copy of directory A into directory B.
- Restore B -> A (full): Makes a full copy of directory B into directory A.
- Contribute A -> B (incremental): Mirrors only new files from directory A into directory B.
- Contribute B -> A (incremental): Mirrors only the new files from directory B into directory A.
- Synchronize A -> B (custom): Custom mode to synchronize directory A into directory B with all advanced options.
- Synchronize B -> A (custom): Custom mode to synchronize directory B into directory A with all advanced options.
- Highly customizable custom synchronization modes.
- Option for various behavior of conflict resolution for Bidirectional Synchronization.
- Synchronizes unlimited number of files and folders.
- Large number of options to change the synchronization behavior.
- Option to synchonise subdirectories recursively.
- Synchronizes files/folders any file system (FAT, FAT16, FAT32, NTFS, WinFS, UDF, Ext2, Ext3, ...).
- Synchronizes files from/to network drives
- Synchronizes files from/to any mounted devices (Harddisks, USB-Sticks, Memory cards, External drives, CD/DVD's, ...).
- Synchronization could be used for making incremental backups.
- Option to create up to 50 backups from the modified/changed files before synchronization.
- Option to define a backup folder where DirSync Pro keeps tracks of files which are being overwritten.
- Option for handling symbolic links.
- Advanced options for handling time-stamps.
- Option to define timestamp granularity.
- Option to handle 'daylight saving' related timestamp granularity (useful when syncing with FAT file systems).
- Option to preserve DOS attributes when synchoronizing (DOS/Windows only).
- Option to preserve file ownerships (user and group, POSIX only).
- Option to preserve file permissions (POSIX systems only).
- Schedule Engine
- DirSync Pro has a powerful Schedule Engine with lots of features to run automated scheduled synchronzation tasks.
- Once: Run sync tasks at a certain time in the future.
- Minutely: Run sync tasks recurrently every X minutes.
- Hourly: Run sync tasks recurrently every X hours.
- Daily: Run sync tasks recurrently on a certain time daily.
- Weekly: Run sync tasks recurrently on a certain time and in specific months every X weeks.
- Monthly: Run sync tasks recurrently every month on day number X, on a certain time and in specific months.
- Filters
- DirSync Pro has comprehensive filters to include or exclude files
and directories. The user can set up a combination of unlimited number
of filters of the following types:
- Filter based on string patterns in file/directory names.
- Filter based on file sizes. (smaller than, equal, larger than).
- Filter based on modification dates (earlier than, on a date, later than).
- Filter based on an absoulte path.
- Filter based on DOS attibutes (DOS/MS Windows only).
- Filter based on file ownerships (user and group, POSIX only).
- Filter based on file permissions (POSIX systems only).
- General
- Easy, clear and user-friendly graphical user interface, no unnecessary gadget you never use.
- Runs on every modern operating system including Windows™, Linux™ and Macintosh™
- It is Portable! It does not need any installation. Just run the application!
- Open source, it is 100% free of charge, 100% free of commercial text, 100% free of advertisements and 100% free of spyware.
- No time/function limitations
- Uses no local database, so no overhead
- Does not need any installation. Just download and run it. You can
put it on you USB-stick en you can run it on any computer/any platform.
- Does not copy your files to a server on internet to synchronize your data. In this way you are totally in charge of your data.
- Lets your create a command line and save it to a batch file to run a synchronization with one mouse click or in a batch.
- Logging
- Advanced logging/reporting facilities. Just select a log level and define where to write the log.
- Option to log on application level (default log)
- Option to log on each directory level (dir log)
- Option to define the log leven (how much to log)