VoxelFlight
From ATLauncher Wiki
VoxelFlight is a mod developed by the VoxelBox team.
It is used in the VoxelBoxModPack, and allows users to obtain creative flight in-game. It is similar to the flight from Zombie's Mods. It also adds in other things, like the option to jump very high into the air, instead of the normal one-block jump. It requires VoxelLib, a core mod for most of the VoxelBox mods. The VoxelBox wiki has additional information about the mod, which can be found here.