Self-hosted apps that integrate with GOG

4 open-source, self-hostable projects list GOG as an integration.

• Foundation SunshineOpen-source, self-hosted Windows game-streaming host (an enhanced Sunshine fork) that streams PC games to Moonlight clients with HDR10, Dolby Vision and virtual displays.
• JunimoServerSelf-hosted, open-source dedicated server for Stardew Valley multiplayer with automatic backups, SMAPI mod support, cross-platform play, and web-based administration.
• chimeraSelf-hosted web app to remotely install GOG, Epic, and Flathub games, upload ROMs for 20+ emulators, and control system actions on Linux gaming machines.
• backlogiaBacklogia is a self-hosted, open-source game library manager aggregating games from 11 stores with IGDB metadata, playtime tracking, and custom collections.