Gameyfin
Gameyfin is a free and open-source application for managing your video game library. Track installed and wanted games, fetch metadata (e.g. IGDB, Steam), and use plugins for downloads and extra providers. It runs as a Kotlin / Spring Boot app with a web UI, PF4J plugins, and optional OIDC. Docker is the recommended install path; persist db, data, plugin data, logs, and mount at least one folder for your game files.