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SPECIFICTION
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GameIndex

github.com

Free plan WindowsLinux
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Spec score 7.6 #16 of 40 in Game Library Managers

What it is

GameIndex is a free native launcher and library manager that combines PC game collections from multiple stores. It can sync Steam, GOG, Epic, Rockstar, Ubisoft, and Humble libraries, while also accepting manual imports. Discovery tools include an IGDB-powered storefront, deals, a wishlist, activity tracking, and achievement tracking across platforms. The interface offers six UI styles, theme customization, and a Layout Studio for rearranging elements. GameIndex runs on Windows and Linux, including Steam Deck, with configurable Wine and Proton runners and per-game compatibility settings. Linux packaging includes AppImage and .deb. Integrations listed by the project include Steam Workshop, Nexus Mods, Discord Rich Presence, RetroAchievements, IGDB, and HowLongToBeat. Its social layer is local-first, with a Privacy & Data tab for viewing and wiping local storage, and secrets use the operating system keychain. The project is free to use, modify, and distribute under the MIT License.

Spec sheet

Purpose
GameIndex is a cross-store game launcher and library manager that brings game libraries into one native app.Read 8 Oct 2026 · github.com
Intended users
The maker describes the project as a personal learning exercise and a love-letter to PC gaming.Read 8 Oct 2026 · github.com
Integrations
Listed integrations include Steam Workshop, Nexus Mods, Discord Rich Presence, RetroAchievements, and data sources such as IGDB and HowLongToBeat.Read 8 Oct 2026 · github.com
Customization
The app offers six UI styles, theme customization, and a Layout Studio for rearranging interface elements.Read 8 Oct 2026 · github.com
Discovery and tracking
Features include an IGDB-powered storefront, deals, a wishlist, activity tracking, and cross-platform achievement tracking.Read 8 Oct 2026 · github.com
Library sources
It can sync Steam, GOG, Epic, Rockstar, Ubisoft, and Humble libraries, and supports manual imports.Read 8 Oct 2026 · github.com
Linux support
GameIndex supports Linux and Steam Deck with configurable Wine and Proton runners, per-game compatibility settings, and AppImage and .deb packaging.Read 8 Oct 2026 · github.com
Planned features
The README lists Flatpak packaging, a community theme browser, and broader plugin hooks as planned or in progress.Read 8 Oct 2026 · github.com
Privacy and storage
The README describes the social layer as local-first and says Settings includes a Privacy & Data tab to view and wipe local storage.Read 8 Oct 2026 · github.com
Secrets
The project README says secrets use the operating system keychain.Read 8 Oct 2026 · github.com
Security caveat
The maker says release builds are unsigned and notes that antivirus tools may flag them with machine-learning heuristics.Read 8 Oct 2026 · github.com
Support and maturity
The maker invites contributions and ideas, while describing GameIndex as a personal project that may have rough edges and breaking changes.Read 8 Oct 2026 · github.com

Plans and prices

GameIndex Free Free to use, modify, and distribute under the MIT License Personal project; rough edges, breaking changes, and rapid iteration expected Read 8 Oct 2026 · github.com

Every GameIndex plan and price →

Strong points and limits

Strong points

  • Syncs six named game stores
  • Includes deals and cross-platform achievements
  • Six UI styles and Layout Studio
  • Supports Linux and Steam Deck
  • Free under the MIT License

Limits

  • Release builds are unsigned
  • Antivirus tools may flag releases
  • The maker warns of rough edges and breaking changes
  • No free trial is offered

Who it suits

It suits PC gamers who want one launcher for several stores, including Linux and Steam Deck users needing configurable compatibility settings.

Verdict

GameIndex brings multi-store libraries, discovery, customization, and Linux support into one free application. It remains a personal project, so unsigned releases and possible breaking changes deserve attention.

Where Specifiction places it

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