7-Zip is a file archiver with a high compression ratio and is open source software. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license
You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. But you can make a donation
to support further development of 7-Zip. What's new:
- It's possible to specify Diff program in options (7-Zip File Manager).
- Some bugs were fixed.
News source: Official website
Download: 7-Zip 9.07 beta
This is BETA software!, please use caution when installing it on your system