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pigz vs crabz: catalog facts
pigz	crabz
Free Free and open source with no paid tier.	Free Free and open source, dual-licensed under MIT and the Unlicense.
Linux, Command line	macOS, Linux, Command line
Uses all CPU cores when compressing Output is standard gzip format	Multi-threaded compression in the style of pigz Supports Gzip, Zlib, BGZF, Mgzip, raw Deflate and Snap
Decompression gains little from multiple cores Distributed as source code; you may need to compile it	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: Zlib	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.