TypeStrap is for those who want more control over their typography. It's a CSS based type kit using the principles of Modular Scale and built on Bootstrap 4.

KeyShape is a vector graphics animation tool that works seamlessly with Sketch. Create symbols, export to multiple formats such as CSS, animated GIFS or even video files.

Key Color for Sketch let's you apply colors via the keyboard. No more annoying clickedy-clicking the menu's; hotkeys ftw!

ps, I was made aware of this plugin was found by Bernat Fortet on Spectrum's Sketch Watercooler chat!