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GNU Gzip vs bzip3: catalog facts
GNU Gzip	bzip3
Free Free software from the GNU Project.	Free Free to use, with source code published on GitHub.
Linux, Command line	Windows, macOS, Linux, Command line
Available on nearly every Unix-like system The .gz format is read almost everywhere	Aims for better compression than bzip2 Includes cat, grep and less style helper commands
Compresses single files or streams, not multi-file archives Lower compression ratio than xz, zstd or lzip	The .bz3 format is less widely supported than gzip or bzip2 Command line only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
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.