cabextract is Free Software for extracting Microsoft cabinet files, also called .CAB files, on UNIX or UNIX-like systems. cabextract is distributed under the GPL license. It is based on the portable LGPL libmspack library. cabextract supports all special features and all compression formats of Microsoft cabinet files. Microsoft cabinet files are used to distribute all kinds of data and software: core Web fonts, Longhorn videos, operating system updates and video codecs, to give some examples.