- "CAB" redirects here. For another CAB format, see InstallShield CAB.
Cabinet (CAB) is a compressed archive format created by Microsoft and used in various installers. Among its several compression formats is LZX, a format co-created by Jonathan Forbes, who was hired by Microsoft after co-creating the format in an independent archiver, and contributed it to Microsoft for use in their products.
The Windows Installer (.msi) format is more-or-less the successor to this format.
Files begin with the ASCII signature "