The Quilt Project is a modern, open source, free, and lightweight mod loader for Minecraft since version 1.18.2, forked from the similar Fabric Project. If you use Fabric, Forge, vanilla, or OptiFine on a day-to-day basis when playing on 1.18.2 or above, I would recommend checking out Quilt.
Quilt forked from Fabric for a good number of reasons, the primary of which was due to lack of proper moderation or administration. A good portion of the rationale for Quilt forking can be found in this gist.
This is a reference page for links with guides that I have made for Quilt.
Installing Quilt Mods
Maximizing Performance with Quilt
Updated Quilt Mods for 1.19.2
Why you shouldn't use OptiFine
Minecraft Forge vs Fabric, which should you use? by me4502