7-Zip fully supports 7z archives.
7-Zip creates fully ZIP compatible archives. It means that everyone can decompress these files by any ZIP compatible decompression utility. During compression 7-Zip can use one of the following ZIP compression methods:
The current version of the 7-Zip can extract any files from ZIP archive that were compressed with one of the following methods:
Files compressed with other ZIP compression methods can't be extracted by the current version of the 7-Zip. But supported methods are the most popular now and it causes 7-Zip can decompress the most of ZIP archives. For extracting files compressed with non-supported methods you must use some other ZIP utility.
7-Zip supports Zip64 extension of ZIP format.
The current version of the 7-Zip doesn't support Zip multivolume archives.
7-Zip fully supports GZIP files.
7-Zip fully supports TAR files.
7-Zip fully supports BZip2 files. BZip2 module in 7-Zip is based on sources of original program that supports bz2 files - bzip2. The home page of original bzip2 can be found at http://www.muraroa.demon.co.uk.
7-Zip supports RAR archives only for listing, browsing and decompressing.
7-Zip supports CAB archives only for listing, browsing and decompressing.
7-Zip supports ARJ archives only for listing, browsing and decompressing.
7-Zip supports Z archives only for listing, browsing and decompressing.
7-Zip supports cpio archives only for listing, browsing and decompressing.
7-Zip supports RPM archives only for listing, browsing and decompressing.
7-Zip supports DEB archives only for listing, browsing and decompressing.
7-Zip supports split files only for listing, browsing and decompressing.