Stuff I've done (that I'm still proud of)
You know the feeling—you're writing something, and the ideas are flowing, but you don't know where to put them all. That's what openworldcrafter is for. It keeps your thoughts, ideas, and notes in one place and gives you the freedom to organize them however you wish. Oh yeah, and it's free!
Generates loot tables for Minecraft. May be woefully outdated, but I'm not quite sure. I haven't needed loot tables in a while.
Generates /tellraw commands using a simple editor.
Generates tutorials for Minecraft maps. You can add different pages, with links between them that can be clicked in-game.