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