Serifu is a simple markup language for composing comic book scripts (in particular, translations of Japanese manga) as plain text. You can check out a demo web-based editor for it here: https://serifu-sketchpad.glitch.me/. There's also an InDesign extension!
"Meme It So" is a meme and GIF generator that puts every frame of Star Trek: The Next Generation at your meaning-making disposal. Very fun!
Check out the code here: https://github.com/kupad/meme-it-so.