Make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons
Building Tools and Aesthetic Technology
Archipelago Multi-Game Randomizer and Server
Minecraft map editor and mod
A permissions plugin for Minecraft servers
Programming eXperience Toolkit
All of Minecraft, EASILY get Minecraft resources
Inspecting and manipulating NBT as a file system
Chromium OS Universal Chroot Environment (EOL)
Converts Minecraft world files between formats to allow editing
Pack-N-Mine. The mobile Minecraft.
An open-source minecraft launcher