Collectible Skins
Zughy

Wear and unlock skins

music modpack
mt-mods

Music modpack with API for easy in-game music playback and custom track registration.

Fire Plus
LandarVargan

Allows players to be lit on fire.

Magma Conduits
FaceDeer

Removes default mapgen lava and adds widely-spaced vertical lava "veins".

Geodes
AwesomeDragon97

Adds amethyst geodes and an API for making custom geodes.

Zero-Effort Custom Minerals
Piezo_

A tool for registering entire materials, complete with ore generation, tool-sets and automatically generated sprites with almost no effort required

Placeable Buckets for Catching Rainwater
Noodlemire

Allows empty buckets to be placed as nodes in order to collect rainwater.

Treasurer
Wuzzy

A framework to define and distribute random treasures into the world.

City Block II
sorcerykid

Disables use of water and lava buckets within a designated area

Computing
Lunovox

Add multiple computing devices such as: Smartphones and Desktops. It supports several apps integrated by other mods.

Paintings Library
JoeEnderman

A simple paintings library for MTG and potentially others in future.

Pillars
citorva

Add a lot of pillars for fun.

Jean's Economy
Jean3219

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

Item Holders
Jose_ManuelS18

Adds 'Item Holders', blocks that hold your items in display, also provides a API.

Basic Ownership
sorcerykid

An efficient and flexible node-based protection scheme for multiplayer worlds

GetName
kevins

Adds an API and tool to generate random names for NPCs, mobs, and places.

House Windows
DiamondPlane

Adds windows for your house

Loot
Byakuren

A loot framework.

Archaeology
SkyBuilder1717

Adds an looting and API in archaeologing

Scripted World Editor
Neuromancer

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

Library Mount
Panquesito7

API Framework for mounting objects.

monster_api_gb
GigaByte

add an api to create bosses

Trucraft
mt-mods

An alternative crafting system done entirely in the world.

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Signs Redux
sorcerykid

Signs Redux is a complete rewrite of default signs that adds many new features

Bedrock Markup Language
sorcerykid

Bedrock Markup Language is an extensible markup language and API for formspecs.

Discrete Player API
Hypernoot

A library for games which attaches players to node grid

Phonics Library
Neuromancer

Provides a library for creating Phonics (Learn how to read) mods in different languages.

Minebase Core
ThatCommand

Adds APIs and new dynamic functionalities.

Telegram
neko259

Integration with telegram messenger chat

Walkover
lordfingle

A library to make it easier for developers to detect on_walk_over