ubden/CreamApi-CreamInstaller

Automatically finds all installed Steam, Epic and Ubisoft games with their respective DLC-related DLL locations on the user's computer, parses SteamCMD, Steam Store and Epic Games Store for user-selected games' DLCs, then provides a very simple graphical interface utilizing the gathered information for the maintenance of DLC unlockers.

Legendary - A free and open-source replacement for the Epic Games Launcher

An open-source script that automatically Cracks (removes DRM from) Steam games

Open Source Steam Unlocker

Legit DLC Unlocker for Steamworks

Installs the latest UMU/GE-Proton and Non Steam Launchers under 1 Proton prefix folder and adds them to your steam library. Installs... Battle.net, Epic Games, Ubisoft, GOG, EA App, Amazon Games, itch.io , Legacy Games, The Humble Games Collection, IndieGala, Rockstar Games Launcher,PS Plus, Glyph, VKPlay & HoYoPlay, Waydroid and Games on SD Card.

Install, tune and restore DLSS 5 in your games with one click. Native RenoDX, DLSS5-Feeder for games without DLSS, OptiScaler and multipass routes; DirectX 8/9/11/12, Vulkan, OpenGL, DirectDraw and emulators. In-game F8 overlay, automatic backups, and a community page showing what works on your games and your graphics card.

Lutris desktop client

Steam Game Automatic Cracker