PolyMC is a custom launcher for Minecraft that focuses on predictability, long term stability, and simplicity.

Features:

• Easily install game modifications, such as Fabric, Forge, and Quilt
• Control your Java settings
• Manage worlds and resource packs from the launcher
• See logs and other details easily
• Kill Minecraft in case of a crash/freeze
• Isolate Minecraft instances to keep everything clean
• Install and update mods directly from the launcher