Tonkatsu Box
Free open-source app to organize collections of retro games
...Users can organize collections through customizable views, tags, and filters. It also provides statistics, recommendations, release calendars, and visual collection boards. Import tools support services such as Steam, Trakt, MyAnimeList, and AniList. Additional features include tier lists, local backups, and collection sharing. Built with Flutter for Windows, macOS, Linux, and Android, Tonkatsu Box offers a centralized environment for managing entertainment collections.