7Zip is an open source archiving utility currently supporting only Windows platform. It fully supports 7z, ZIP, GZIP, BZIP2 and TAR formats.

AppCompactor allows you to easily compress applications to decrease size on disk and increase performance.

Bandizip is a free Zip Archiver. It extracts the most popular compression formats, including Zip, ZipX, 7z, and RAR files.

Archive Manager (File Roller) is the archive manager of the GNOME desktop environment.

Keka is a full featured file archiver, as easy as it can be. With Keka you can compress as many files as you want in a bunch of formats.

PeaZip is an open source file and archive manager.

7z SFX-Creator is a windows GUI for creating self-extracting (*.exe) files from 7zip archives (*.7z).

B1 Free Archiver is a multi-platform file archiver and file manager.

Bitser is free Windows software for managing archives and backups. It supports ZIP, 7Z, RAR, ISO, MSI, VHD, GZIP, BZIP2,TAR, LZMA, LZMA2,etc.

IZArc is a utility that will decompress tons formats like ZIP and RAR.

p7zip is a command-line interface 7-Zip, a free and open-source file archiver.

The Unarchiver is a much more capable replacement for "Archive Utility.app", the built-in archive extraction program on Mac OS X.