Climbing Pick
lag01

Tool to climb, double jump, and do good damage to mobs.

Molten Sailor by Dokimi
CalebJ

Boat for sailing on lava, suit for diving in lava.

Cloudcraft
EmptyStar

Adds tangible clouds and cloud-related items to Luanti worlds

Boots of Swiftness Mod
ClothierEdward

Adds a new pair of boots called the Boots of Swiftness.

Ocular Networks
mt-mods

Draw power from the world, and use it to power machines and tools.

Kill history hud
GigaByte

adds a death history on the screen

Death Coords
Niden

Show Death Coordinates

XP Highscores
debiankaios

Add a better highscore system for xp_redo.

Brights
_Xenon

Adds bright stuff

Dirt Tunneler
Neuromancer

Makes dirt deeper and you can tunnel through it just by walking through it. Press spacebar/shift to tunnel upward/downward with auto placed ladders.

Hbdrunk
UnchainedDevelopment

Adds intoxication effects and HUD bar to display intoxication level.

Random (Useful) stuff
pl608

A library that adds well... Random Stuff

Darks
_Xenon

Adds dark stuff