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