: Utilizing the LZMA and LZMA2 algorithms, 7z files often achieve 30–70% better compression than standard ZIP files.
The .7z extension signifies an archive created using 7-Zip, an open-source file archiver developed by Igor Pavlov. This format is characterized by: Mag04V3.7z
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. : Utilizing the LZMA and LZMA2 algorithms, 7z