The best open source alternative to FreeFileSync is Syncthing. If that doesn't suit you, our users have ranked more than 100 alternatives to FreeFileSync and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to FreeFileSync are Rclone, rsync, Hoodik and Syncthing-Fork.
Open-source, peer-to-peer service offering encrypted file synchronization, ensuring data privacy and user-autonomy without relying on cloud storage or central servers, suitable for various uses.
Rclone ("rsync for cloud storage") is a command-line program to sync files and directories to and from different cloud storage providers.
rsync is a software application for Unix which synchronizes files and directories from one location to another while minimizing data transfer using delta encoding when appropriate. An important feature of rsync not found in most similar programs/protocols is that the mirroring...
Lightweight, self-hosted encrypted cloud storage enabling fast uploads and downloads, easy Docker install, secure public link sharing, browser-side cryptography, searchable metadata, and low RAM footprint. Designed for privacy, performance, and file management.
Comprehensive file sync solution featuring individual sync settings per device and folder, Android-optimized interface, efficient battery-saving options, two-way SD card sync on Android 11+, and robust encrypted folder support for security.
restic is a program that does backups right. The design goals are: Easy, Fast, Verifiable, Secure, Efficient, Free.
Unison is a file-synchronization tool for POSIX-compliant systems (e.g. *BSD and GNU/Linux), macOS and Windows, with the caveat that the platform must be supported by OCaml. It allows two replicas of a collection of files and directories to be stored on different hosts (or diffe.
Kopia is a fast and secure open-source backup/restore tool that manages filesystem snapshots in a remote storage. It features client-side encryption, compression, backup policies. command-line interface and more.
Toucan is a small portableapp utility allowing you to synchronise, backup and secure your data with more options than the built in suite utilities. It is split up into 7 tabs, allowing you to easily find the function that you want.
Bacula is a set of computer programs that permit managing backup, recovery, and verification of computer data across a network of computers of different kinds.
DirSync Pro is a small, but powerful utility for file and folder synchronization. Java JRE 1.7 or above is needed to run DirSync Pro.
Round Sync helps you to manage your files, everywhere you go, on your local device or on most cloud providers.
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FreeFileSync is used to sync files between directories/drives, while Syncthing is used to sync files between devices.