Map Tools
Calinou

Adds various special versions of normal blocks, tools, and other map maintainer tools.

MobConf
zeuner

Place, remove and configure Mobs (for now: NPCs) using chatcommands

NextGen Bedrock
StarNinjas

Adds an indestructible bedrock layer at the bottom of the world.

Cozy Lights
SingleDigitIq

Early alpha. Improves the way light sources(torches etc) behave and allows to create huge lights, literal projectors with just a mouse click, light map will be computed for you.

Jean's Economy
Jean3219

Full Economy for Servers like, paying, individual bank statemants, daily rewards, easy api for modders, easy integration with other mods ...

Protector Blocks for Area Protection Mod
1F616EMO

Protector Block, but using the Area Protect APIs

WorldEdit Wall Block
SkyBuilder1717

Adds block and item for making big structures easily as possible.

doorbell
Miniontoby

A doorbell mod with sound

Lava + Water > Stone
1F616EMO

Cool Lava into technically special stones for easier cleanup

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

welcome color
GigaByte

adds a welcome message in green with ramdom messages and a message when a player leaves in red

Metatool
SX

Provides API to register node metadata tools along with few useful tools

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Anti Lava Area
1F616EMO

give admin power to anti lava in some region.