B1 Archiver is available for Microsoft Windows, Linux, macOS, and Android.

It has full support (compression, unpacking and encryption) for ZIP and its native B1 format.

[3] Translations are made by volunteers through the Crowdin localization management platform.

[9] B1 Free Archiver has full drag-and-drop support, keyboard shortcuts and hotkeys navigation.

[14][15] Main disadvantages are that files inside the B1 archives doesn't retain timestamps.