GMOD Addon Extractor

GMOD Addon Extractor is a developer-focused tool designed to unpack Garry's Mod addons contained in .gma archives. It enables asset recovery, asset inspection, and selective extraction for efficient asset management. The tool operates by parsing the addon index, enumerating embedded files, and exporting selected content to a user-specified directory. It preserves the original folder structure and metadata where applicable, and supports filtering by asset type (models, textures, scripts) or extracting all contents. Conceptually, extraction is a two-phase process: indexing the archive to identify entries, then streaming the content to disk with optional filtering. This approach helps modders, asset archivists, and QA teams verify addon contents without loading the full runtime. Benefits include reproducible exports, easier auditing of assets, and faster repackaging for distribution. The tool is platform-agnostic, relies on standard file operations, and provides robust error reporting for corrupted or nested addons. Unique value comes from solid handling of nested addons, optional filters, and a clean output layout that supports downstream workflows such as re-packaging into new addons or sharing asset libraries. Use cases include asset recovery after addon removal, content verification during mod development, and preparing assets for documentation or migration.