A comfortable and well-configurable graphical frontend for incremental backups using rsync, with a command-line version also available. Modified files are transferred, while unchanged files are linked to the new folder using rsync's hard link feature, saving storage space. Restoring is straightforward via file manager or command line.

批量、快速硬链工具(The batch, fast hard link toolkit)

snapshot backups using hardlinks+rsync. It uses rsync to take snapshots of local and remote filesystems for any number of machines, and then rotates the snapshots according to your rsnapshot.conf

A simple versioning backup tool written in PowerShell.

A tool to scan directories and report on the space that could be saved by hardlinking identical files. It can also perform the linking. Written in Go.

sift - a file and folder sifter

A hardlink command that works. Scan for and hardlink identical files.

Analyse 2 paths to found identical files and hard link them to save space

This is a fork of DFHL. Use the website link to find the upstream version. This is left for those who want to use it, but I currently don't intend picking this ever up again.

Hardlink duplicate files

shazer - find and hardlink duplicate files based on checksums