Ocean
StarNinjas

Adds coral reefs, fish, decorative ocean blocks and much more!

Nether Mobs
Dirkfried

Add monsters and dragons to your nether world.

Technic
RealBadAngel

Extensive machinery mod with electricity and ores.

Library Mount
Panquesito7

API Framework for mounting objects.

New Campfire
mt-mods

You can craft and use better campfire.

BingFeng Maidroid
XYChen

An improved version of Maidroid, providing maid robots.

Plantlife
mt-mods

Adds various kinds of plants, fruit bushes, fallen trees, and a whole host of foliage and other ground cover.

Gloop Blocks
mt-mods

Adds decorative and functional blocks, including cement, rainbow blocks, "evil" blocks, and tools.

Bouncy Bed
MeseCraft

Simply makes beds bouncy.

Simple streetlight spawner
mt-mods

Adds various streetlight "spawners" (5m tall, supports multiple pole materials and light sources)

Basic signs
mt-mods

A small selection of metal wall signs, and a few kinds of wooden signs.

Vehicle Mash
Panquesito7

Adds many types of vehicles: cars, boats, hovercrafts and more.

Warning: Non-free media.

Claycrafter
Dragonop

Introduces the Claycrafter, which converts Compressed Dirt to Clay using Glasses of Water.

3D Armor
stu

Visible player armor & wielded items.

Brights
_Xenon

Adds bright stuff

Darks
_Xenon

Adds dark stuff

Witches
FreeLikeGNU

Helpful and unique witches inhabit the land adding a magical touch and interact with player! Work in progress, but playable!

Bucket lite
daret

Bucket - fork of Minetest Game mod with reduced "bucket" liquid flowing

Fire Plus
LandarVargan

Allows players to be lit on fire.

Nether
PilzAdam

Adds a deep underground realm with different mapgen that you can reach with obsidian portals.

Cloud Items
Panquesito7

Powerful cloud tools.

Warning: Non-free media.

Invisible Blocks
Truemmerer

Add invisible Blocks

ColoredCement
Truemmerer

Add Cement Blocks with unifieddyes support

Basic Anvil
MikeRedwood

Adds an easy tool repair craft

Headanim
LandarVargan

Makes player heads follow their look direction

Obsidian Swords
Dragonop

Adds the Obsidian Dagger, Sword, and Longsword. Also Obsidian tools, for completeness.

Bridger
v-rob

Adds a large number of advanced nodes conducive to building large, industrial bridges.

Slats
v-rob

Adds decorative slats that have a lot of uses.

Fancy Stained Glass
v-rob

Adds fancy and highly adaptable stained glass and spiked iron railing.

Spacecannon
mt-mods

Adds three scifi/space cannons with various projectile-speed and explosion-strength