B1 Free Archiver is a multi-platform file archiver and file manager. Developed by Catalina Group Ltd.
License: Freemium
The Unarchiver is a macOS-exclusive tool known for its simplicity and speed in extracting various archive formats, while B1 Free Archiver offers cross-platform support and additional features like a built-in file manager. The choice between the two largely depends on the user's OS and specific needs.