Cloudlands
Floating islands in the sky.
Ropes
Easily travel up and down mine shafts.
Techpack
Automate many things.
Portalgun
Play Portal in Minetest.
Sponge
Quickly clear water.
Chess
Place Chess in Minetest.
Caverealms Lite
Caverealms little brother.
Mobs Redo
API for adding mobs.
Builtin Item
Makes a few tweaks to builtin.
Colouredstonebricks
Stonebricks, but they're colored.
Clumpfall
No more floating structures.
Hyperloop
It's like a subway system.
BBQ
Grilling, smoking, all that good stuff.
Tunneltest
Easily make tunnels.
Cityscape
No longer maintained, but still works.
Anvil
Repair your tools.