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XZ Utils vs p7zip: catalog facts
XZ Utils	p7zip
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Free and open source.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
LZMA2 compression gives some of the best ratios available for general-purpose data, and the tools ship on effectively…	Brings 7-Zip's strong compression ratios to Linux and macOS from the command line Widely bundled in Linux distributions, so it's readily available
Compression is slow and memory-hungry at high levels, and the 2024 backdoor incident in the upstream release tarballs…	Command-line only, no bundled graphical interface Development has slowed compared to the original Windows 7-Zip project
Downloadable app	Downloadable app
Open source	Open source
License: 0BSD	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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