FreeFileSync is a folder comparison and synchronization software that creates and manages backup copies of all your important files. Instead of copying every file every time, FreeFileSync determines the differences between a source and a target folder and transfers only the minimum amount of data needed.

Download FreeFileSync 14.3. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

Download FreeFileSync 14.3. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

Download FreeFileSync 14.3. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

FreeFileSync is a graphical file synchronization and folder comparison tool. This means that its main purpose is to speed up backup operations by examining the differences between source and target folders, and then only copy what is really needed rather than copy everything each time like disk cloning/imaging tools do.

Practically speaking, the only limiting factor for extremely large sync jobs is the amount of free memory available: For each 1 GB of RAM, FreeFileSync can synchronize roughly 1 million file pairs at a time. May I distribute the FreeFileSync installation package? You are permitted to distribute the software subject to the following conditions:

Download FreeFileSync 14.3. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

Download FreeFileSync 14.3. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

If it wasn't for the requirement of sync.ffs_db files: "Mirror" can be expressed both via "differences" and via "changes", but doesn't need a database file in the first case. "Mirror without database" is a frequent requirement and kept as the default. Therefore FreeFileSync now supports two fundamentally different ways to set up sync directions.

Download FreeFileSync 14.3. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.