igir.io

What It Is

Igir (pronounced “eager”) is a zero-configuration ROM collection manager designed to manage ROM libraries of any size on any operating system. It is not a general-purpose DevOps tool, but a highly specialized command-line development and data-organization tool focused on emulators, DAT verification, archiving, patching, and ROM set building. You can run it by downloading the appropriate version for your system, or by installing Node.js and executing it via npx igir@latest.

Core Features and Ecosystem

Based on the documentation, Igir offers a very complete workflow: it can scan DAT files, ROMs, and ROM patches, including scanning inside archives; organize files by console/platform; normalize names and extensions; filter by language, region, category, BIOS, retail release, prototype, and more; and supports 1G1R preferences. It can also batch-extract files, create ZIP archives, generate multi-disc playlists, automatically apply patches, detect/remove specific ROM headers, and build or rebuild MAME ROM sets. Its documentation covers ecosystems such as Batocera, EmuELEC, EmulationStation, Lakka, LaunchBox, OnionOS/GarlicOS, RetroArch, RetroPie, MiSTer FPGA, Analogue Pocket, and EverDrive, which shows that it is closely aligned with real-world emulator use cases.

Formats, API, and Documentation

Igir mainly provides a CLI rather than an HTTP API or SDK. Commands include copy, move, link, extract, zip, playlist, test, dir2dat, fixdat, clean, report, and others. Archive reading supports .7z, .chd, .gz, .rar, .tar, .zip/.zip64, and more, though different formats vary significantly in terms of CRC support, temporary-file handling, and reliance on third-party tools. The tool also explicitly recommends prioritizing ZIP, since it includes CRC32 information and is easier to read and write. For patches, it supports .bps, .ips, .ppf, .ups, and some .xdelta/.vcdiff formats. The documentation is high quality, with compatibility tables, performance tips, and command examples.

Pricing and Open Source

The site includes links to GitHub, Issues, Contribution Guidelines, License, and Donate, so it can generally be identified as an open-source project, although the specific license name is not stated in the source text. No commercial pricing or paid version information is shown, so it can be treated as free to use with donation-based support.

Pros, Cons, and Who It’s For

Its strengths are deep functionality, broad coverage, cross-platform support, and detailed documentation. It is especially suitable for organizing large ROM collections, rebuilding MAME sets, generating trimmed sets by region or language, batch-applying patches, and producing missing-file reports. The downside is that the CLI has a relatively high learning curve: non-technical users need to understand concepts such as DAT files, checksums, headers, and merge types. Some formats depend on external or bundled tools, and nested archives are not read.

Access from China

The source text does not provide information about network access or payment availability in China. Access stability for GitHub, npx, and the project site may vary depending on the local network environment, so the conclusion can only be marked as unknown. If access is inconvenient, similar ROM managers such as RomVault may be worth considering, while Rom Patcher JS can be referenced for ROM patching scenarios.