I'm the co-founder of Slides.com—a presentation tool based on one of my open source projects, reveal.js. Beyond that I love to work on UI experiments over at https://hakim.se!
Slides is a presentation tool for developers built on top of the reveal.js open source HTML presentation framework. It offer a wide range of developer-focused features like step-by-step code highlighting, a CSS editor, LaTeX typesetting, HTML exports and more.
Kodemo lets you write technical documentation and code tutorials in a format that is intuitive and fun to read. It's perfect for walking readers through changes to code, images and more. Plus, it's open source!