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Zstandard vs Brotli: catalog facts
Zstandard	Brotli
Free Free and open source, dual licensed BSD or GPLv2.	Free The open-source application is available without a license fee.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
Compression close to zlib's ratio at several times the speed, and much faster decompression The format is standardised in RFC 8878 with multiple independent implementations	Command-line tool and reusable compression library
A command-line tool with no graphical interface of its own Maximum ratio is below xz or 7z at their slowest settings, which is the trade it makes on…	The stream format does not include checksums or original length metadata.
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: MIT
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

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