About B1 Free Archiver

Free multi-platform acrhive manager with a unique format

B1 Free Archiver is

A free universal archiver

B1 Free Archiver is a free multi-platform universal archiver. It works on all popular platforms - Windows, Mac, Linux, Android and as a web-application. Launched in 2011, B1 remains the most friendly and simple software to open and create archives. B1 Free Archiver is 100% free for both personal and commercial use.

Powerful and secure

B1 supports many compression formats (zip, rar, 7z, tar, gz) as well as its own b1 format. For it we’ve designed an improved compression algorithm with much better speed to compression ratio. A powerful 256 bit AES encryption algorithm will add an additional layer of security to the archives you create.

Powered by users

We’re constantly working on adding new formats and features to the list. We’d really appreciate if you share your experience with us or leave a suggestion. You can find more information for developers here. If you need any assistance or you’d like to contribute to b1 project - please do not hesitate to contact us.