Compare software

crabz vs rapidgzip: catalog facts
crabz	rapidgzip
Free Free and open source, dual-licensed under MIT and the Unlicense.	Free Free and open source, dual-licensed under MIT and Apache 2.0.
macOS, Linux, Command line	Command line
Multi-threaded compression in the style of pigz Supports Gzip, Zlib, BGZF, Mgzip, raw Deflate and Snap	Parallel decompression of ordinary gzip files Fast random access into compressed files
Described by its author as a proof of concept Handles single streams, not archive formats like ZIP or 7z	Focused on decompression of gzip only Benefits depend on having many CPU cores
Downloadable app	Downloadable app
Open source	Open source
License: MIT OR Unlicense	License: MIT OR Apache-2.0
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 October 1, 2026

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