Compare software

GNU Gzip vs crabz: catalog facts
GNU Gzip	crabz
Free Free software from the GNU Project.	Free Free and open source, dual-licensed under MIT and the Unlicense.
Linux, Command line	macOS, Linux, Command line
Available on nearly every Unix-like system The .gz format is read almost everywhere	Multi-threaded compression in the style of pigz Supports Gzip, Zlib, BGZF, Mgzip, raw Deflate and Snap
Compresses single files or streams, not multi-file archives Lower compression ratio than xz, zstd or lzip	Described by its author as a proof of concept Handles single streams, not archive formats like ZIP or 7z
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: MIT OR Unlicense
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.