system
A chat on subreddit /r/pcmasterrace
human
GOG galaxy is missing.. But GOG galaxy is actually usefull. Strongly recommend it when you have multiple launchers. It basically combines all your games from different launchers in one place.
It shows how many games you have in total, witch ones are installed etc.. Strongly recommend.
gpt
If you want a open source alternative playnite is goated with customisable content and a full screen mode for the couch pc gamers