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7-Zip-zstd vs Zipware: catalog facts
7-Zip-zstd	Zipware
Free The software is free under its open-source licence. Hosting, hardware and external…	Free Freeware for personal and commercial use.
Windows, Linux	Windows
It keeps the familiar 7-Zip interface and Explorer menu while adding modern codecs, and it can be installed…	Extracts a wide range of formats including RAR5 Creates AES-256 encrypted and self-extracting archives
Archives that use the added codecs will not open in stock 7-Zip, so they are not safe to…	Windows only Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: BSD-3-Clause	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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