 All versions support multi-threading.The 7za.exe version of 7-Zip is available for Unix-like operating systems (including Linux, FreeBSD, and macOS), FreeDOS, OpenVMS, AmigaOS 4, and MorphOS under the "p7zip" project.7-Zip has a LZMA SDK which was originally dual-licensed under both the GNU LGPL and Common Public License, with an additional special exception for linked binaries.