Meteor Client is built exclusively for the and does not support Forge or NeoForge. It is primarily used on multiplayer "anarchy" servers for tasks like automation, combat enhancements, and world exploration. ManInMyVan/meteor-archive - GitHub

The latest versions of Meteor Client, including 1211, 1206, and 1165, are now available, and they're packed with exciting features and improvements!

Kaelen breached the vault, looted the legendary treasures, and enabled ElytraFly+

Tip: For 1.16.5 specifically, some users recommend using the latest version of Meteor combined with ViaFabricPlus to connect to older servers while maintaining modern features. ManInMyVan/meteor-archive - GitHub

For those who are new to Meteor Client, it's a Minecraft client that provides a variety of features, including performance enhancements, visual improvements, and gameplay modifications. The client is designed to be highly customizable, allowing players to tailor their experience to their liking.