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GNU Gzip vs rapidgzip: catalog facts
GNU Gzip	rapidgzip
Free Free software from the GNU Project.	Free Free and open source, dual-licensed under MIT and Apache 2.0.
Linux, Command line	Command line
Available on nearly every Unix-like system The .gz format is read almost everywhere	Parallel decompression of ordinary gzip files Fast random access into compressed files
Compresses single files or streams, not multi-file archives Lower compression ratio than xz, zstd or lzip	Focused on decompression of gzip only Benefits depend on having many CPU cores
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	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.