Crowbar review
A free Windows toolkit for extracting, decompiling, compiling, previewing, and repacking game assets.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Crowbar is a free, open-source Windows desktop tool for GoldSource and Source Engine modding. It is aimed at creators and modders working with Valve game archives, Garry's Mod packages, compiled models, animations, physics meshes, and related source files. The tool covers VPK, GMA, Vampire: The Masquerade - Bloodlines VPK, FPX, and APK packages, along with MDL, SMD, VTA, VRD, and QC model formats.
Its strongest area is the extraction and conversion workflow. Crowbar can unpack Valve VPK archives and Garry's Mod GMA packages, preview compiled models, and decompile MDL files into QC, SMD, VTA, VRD, and related files. Batch decompilation works across folders and subfolders, which suits projects handling multiple models. It can also compile QC files with a game's studiomdl.exe and pack folders into VPK or GMA files. These features make it a practical fit for users who need both source extraction and package creation rather than a tool limited to archive browsing.
Crowbar also extends into game-specific publishing workflows through downloads and publishing for supported Workshop items, while game setup configuration connects compilation to a game's studiomdl.exe. The project is distributed through its Steam community group and GitHub repository, with source code available. Its focus remains narrow: users working outside Valve and Source Engine formats, or on platforms other than Windows, should look for a different extractor. Choose Crowbar for Valve and Garry's Mod asset work, especially batch model decompilation and archive repacking; choose an alternative for broader engine coverage or cross-platform use.
Crowbar pros and cons
- Where it wins
- Handles VPK and GMA archives, including extraction and repacking
- Supports batch MDL decompilation across folders and subfolders
- Includes model previews, QC compilation, and Workshop operations
- Where it doesn't
- Windows is the only listed platform
- Focused on GoldSource and Source Engine workflows
- The latest listed official release is Crowbar 0.74 from February 2023
Crowbar fact sheet, pricing and score →
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