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:
- 7-Zip now can unpack MSLZ archives.
- Partial parsing for EXE resources, SWF and FLV.
- Some bugs were fixed.
- Some changes in interface.