From Catalina Group:
B1 Free Archiver is a free software for creating archive folder and extracting archive file. B1 Archiver never gathers any kind of personal information and does not install any malicious software. B1 Archiver is extremely simple to use, you don't need comprehensive manuals or guides. You can extract compressed archive files, as well as view the content without extracting them to a new folder. It supports various archive file format like b1, zip, rar, 7z and others. Latest features include protection of archives with password, possibility to choose and set default open action and to repair broken archives.