What Is a CAB File and Why Would You Encounter One on Mac?
CAB (Cabinet) is a compressed archive format developed by Microsoft for software distribution. Windows uses CAB files internally in MSI installers, Windows Update packages, driver stores, and Office installation media. Mac users encounter CAB files in several scenarios: downloading cross platform fonts bundled in Windows installers, accessing driver configuration files for peripherals that ship Windows only software, extracting resources from Windows applications for compatibility analysis, and working with legacy enterprise software distributions. CAB files use a combination of MSZIP, LZX, and Quantum compression algorithms that are not supported by macOS Archive Utility.
How Do You Extract a CAB File on Mac with UnFox?
Drag the .cab file onto UnFox. The app reads the Cabinet archive header and displays the internal file list with sizes. Click "Extract Here" to unpack all contents to a folder alongside the CAB file, or press Cmd+Shift+E to choose a destination. UnFox handles MSZIP and LZX compressed CAB files through its libarchive backend. Extraction preserves the internal directory structure. Some CAB files contain hundreds of files in deeply nested folder hierarchies, and UnFox recreates this structure accurately on the macOS filesystem.
What Files Are Typically Inside a CAB Archive?
CAB files from Windows installers commonly contain DLL libraries, EXE executables, INF driver configuration files, SYS driver binaries, MUI localization resources, and XML manifests. Font distribution CABs contain TTF or OTF font files alongside license documents. Windows Update packages include system files organized by architecture (x86, x64, ARM64). For Mac users, the most practically useful contents are font files, documentation, configuration templates, and media assets. DLL and EXE files extracted from CAB archives cannot run on macOS, but their resources (icons, images, strings) can be examined with appropriate tools.
Can You Extract CAB Files on Mac with the Terminal?
macOS does not include a native CAB extraction utility in the Terminal. The open source "cabextract" tool can be installed through Homebrew with "brew install cabextract" and provides command line CAB extraction. The Python standard library does not include CAB support. For users who prefer a graphical interface over command line tools, UnFox provides drag and drop CAB extraction with progress tracking and file previews. UnFox requires no Homebrew installation or Terminal configuration.
CAB is one of 36 formats UnFox handles. The app also extracts ZIP, RAR, 7Z, TAR variants, ISO, DMG, and application packages. all supported archive extraction formats including Windows archives.
UnFox provides drag and drop extraction, file tree previews, and real time progress tracking for CAB and all other supported formats. archive extraction features for Mac, iPhone, and iPad.