Lutris is described as 'Open source gaming platform for GNU/Linux. It allows you to gather and manage (install, configure and launch) all your games acquired from any source, in a single interface' and is a very popular game library manager in the gaming software category. There are more than 50 alternatives to Lutris for a variety of platforms, including Linux, Windows, Mac, Android and Flathub apps. The best Lutris alternative is Steam, which is free. Other great apps like Lutris are Playnite, Heroic Games Launcher, PlayOnLinux - PlayOnMac and Bottles.
Lutris alternatives are mainly Game Library Managers, but if you're looking for
Compatibility Layer Tools or Game Stores you can filter on that. Other popular filters include
Windows and
Linux. These are just examples - use the filter bar below to find more specific alternatives to Lutris.