I'm in + Tools for You
I going to try for my 10th Ludum Dare! Planning to code it all in vanilla JavaScript.
Over the past year I've made some really nice open source tools to share with everyone...
ZzFX - Zuper Zmall Zound Zynth
A sound effect generator similar to to BFXR/SFXR but reworked from the ground up. You can save out wave files to use the sounds in any game, but the best part about using JavaScript is you don't need wave files at all! Just paste in a bit of code to play your sound.

ZzSprite - A Tiny Sprite Generator
Procedurally generates tiny pixel art sprites with options for mutation and animation frames. Sprites can be copied to the clipboard for easy pasting. It's great for finding interesting ideas to use as a starting point.

ZzArt - Abstract Art Evolution
Evolve HD textures for use in your games. The texture code can be copied and is ShaderToy compatible.

Two of my best games for those interested...
Bounce Back - Boomerang Zelda Homage
Bogus Roads - Lowres Retrowave Racing
Good luck everyone! โ๏ธ๐