B1 Free Archiver

Version1.5(as of 5/13/2021)
PlatformsWindows, Mac, Linux
LicenseOpen Source
Go to Website
Rating:3.6  |  100 Votes

Main Features

  • Simple, understandable user interface
  • Decompresses most popular archive formats
  • Creates B1, ZIP, 7Z, TAR, GZIP, and BZIP2 archives
  • Can encrypt and password-protect archives

Software Overview

Screenshot of B1 Free Archiver
Screenshot of B1 Free Archiver

B1 Free Archiver is a simple file manager and archiver that allows users to create and expand archive files (such as .ZIP files). It is free, reliable, and available for Windows, Linux, Mac, and Android.

B1 allows users to decompress archives saved in most popular archive formats, including ZIP, .GZIP, .RAR, .7Z, .BZIP2, .TGZ, .TAR, .LZMA, .JAR, .CAB, and many more. It also allows users to create archives saved in B1's unique archive format, .B1, as well as ZIP, 7Z, TAR, GZIP, and BZIP2.

While B1's simplicity is its claim to fame, it does include a few advanced features. The program allows users to create password-protected archives, which are encrypted using a 256-bit AES algorithm, and split archives. It also allows users to view and edit archives' contents without decompressing them.


If you are looking for a free and easy-to-use archiver, B1 Free Archiver is worth a try. It will let you decompress almost any archive you come across and quickly create your own compressed archives.

Primary File Type

b1 icon.B1B1 Compressed Archive

Supported File Types

ExtensionFile Type
.B1B1 Compressed Archive
.7Z7-Zip Compressed File
.ARJARJ Compressed File Archive
.BZ2Bzip2 Compressed File
.BZIP2Bzip2 Compressed Archive
.CABWindows Cabinet File
.DEBDebian Software Package
.DMGApple Disk Image
.GZIPGnu Zipped File
.ISODisc Image File
.JARJava Archive
.LHALHARC Compressed Archive
.LZHLZH Compressed File
.LZMSlax Module
.RARWinRAR Compressed Archive
.TARTape Archive
.TAR.GZCompressed Tarball File
.TGZGzipped Tar File
.XARExtensible Archive Format File
.XPICross-platform Installer Package
.ZUnix Compressed File
.ZIPZipped File
.ZIPXExtended Zip Archive
Updated 5/13/2021