NoCtrl is a small clientside mod that helps you deal with conflicting keybinds issues that come with large modpacks.
It adds keybind sets, which can be switched in game by pressing the keybind (default is ALT). NOTE: you can still move around while choosing your set. Each keybind set can have a item model to go with it, meaning you can assign the set an icon to make it easier to distinguish.
YOU CAN USE THIS IN MODPACKS, NO NEED TO ASK
Now with support (and is recommended) for Controlling