free and open-source launcher for Minecraft
Blockgame is a free, open source launcher for Minecraft. It allows you to have multiple, cleanly separated instances of Minecraft (each with their own mods, texture packs, saves, etc) and helps you manage them and their associated options with a simple and powerful interface. Blockgame is a fork of MultiMC: https://multimc.org.
Homepage: https://github.com/yukiisbored/Launcher