Prism Launcher - A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once. It is a MultiMC fork.

MCRAFT.FUN - Free, online, compatible and open source Minecraft web client with ability to connect to Java servers and load or create single player worlds to play offline.

ATLauncher - ATLauncher is a launcher which has many groups made mod packs for the prominent sandbox game Minecraft.

MultiMC - Overview: MultiMC is a free, open source launcher for Minecraft, managed by Forkk13and peterixxx...

Lunar Client - An all in one Client side anti cheat built by the same people who made CheatBreaker.

PolyMC - Fork of MultiMC with additional features like mod downloading and supporting other package formats like flatpak or appimage