B6Zip is a file archiver available as free software under the GNU GPL.
b6z is a part of the B6Zip program distributed under the GNU GPL. Typically, B6Zip compresses b6z files 50-70% more efficiently than zip format. Compressing to other formats is also more efficient with B6Zip (approximately 10-15%). The support for most compressed archive file formats is included. You can download B6Zip from the main page.
B6Zip can be used on any computer including within business and commercial organizations. There is no registration or cost associated with using B6Zip.