B1 Free Archiver is a versatile file compressor and decompressor available across all platforms, completely free of charge. Its user-friendly interface resembles the popular WinRAR, featuring options to create or decompress archives at the top and a file browsing window at the bottom. While it primarily uses the B1 compression format, it also supports unzipping other popular formats like ZIP, RAR, and 7Z. B1 Free Archiver offers the convenience of breaking down archives into separate parts, with handy presets such as the maximum size allowed by Gmail. This makes it an excellent, cost-free solution for quickly and easily managing your compressed files.



Great software for archiving! B1 Archiver has worked wonders for my overflowing files. The compression speed is impressive, and it’s pretty reliable too. The only downside was a small learning curve. Happy overall with this app!