B1 Free Archiver

B1 Free Archiver is a free multi-platform universal archiver. Currently it works on Windows, Mac, Linux and Android; moreover B1 Online Archiver ( http://b1.org/online ) allows you to uncompress .b1, zip, rar or .7z archive from your computer directly online. B1 Archiver supports most popular formats - zip, rar, b1, 7z. Although that’s enough for 99% of cases, we’re working on adding new formats and features to the list.