• B1 Free Archiver
  • B1 Online - extract from archives online
  • Unzip & unrar files in one click
  • Excellent and fast compression
  • Simple and friendly utility
  • Open .zip .rar .7z .b1 and more

Support & feedback

If you have any questions or suggestions please use the form below.
Also please consider that we provide support in English only.

If you have any questions please mail us at support@b1.org

Contact information:
Catalina Group Ltd
Hong Kong, 611 Fook Cheong Building 63 Hoi Yuen Road Kwun Tong

Copyright © Catalina Group Ltd. All Rights Reserved
. B1 is a free file archiver which is available for all popular OS (Windows, Mac, Linux and Android)
and supports zip, rar and other common types of archives. Android is a trademark of Google Inc.