rsync-alternative

Fast file copy engine for Python. Streams over SSH, skips content it has already sent, and reads in block order to keep disks at sequential speed. Local, remote and cloud (S3, Azure, GCS) transfers, typically 3–5× faster than scp, rsync and SFTP. CLI and GUI. Linux, macOS, Windows.

Linux CLI tool for hash-based block device synchronization over local or SSH connections.

Native macOS GUI for the Unison File Synchronizer (Swift + AppKit, GPLv3)

Secure, zero-install folder transfer & one-way mirror-sync between servers over TLS. One small static binary for Windows & Linux (interoperable): parallel streams, adaptive compression, live-DB cutover, resume, and an embeddable ft.dll/libft.so for .NET/C/C++. A drop-and-run scp/rsync-style alternative.

Ransomware-resistant one-way disk sync for external drives, with an approval step. The source is mounted read-only by the kernel; nothing is deleted or overwritten without your approval. Self-hosted, Docker, web UI, exFAT/NTFS, splits one master across several backup drives.

One-way directory mirroring over TCP — real-time, encrypted, single binary

Verified folder & drive mirroring for macOS from the terminal. Copies only what changed, preserves Finder tags/xattrs/permissions, re-reads every copy with SHA-256 before saying SYNCED. A zero-dependency Swift alternative to rsync -a on the Mac.

Move files from Finder to your NAS over SSH — verified, merge-aware and undoable. A friendlier alternative to rsync or dragging over SMB.

CTRL+A for developers. Gitignore-aware project backup that copies source code, not dependencies.