Excellent visual gradient generator for your own CSS classes
Markdown Cheat Sheet
I really like the Markdown Syntax. More and more platforms and web editors embrace it – but sadly I can never remember how to do the simplest things with it. Thankfully, the wonderful Adam Pritchard has compiled a handy cheat sheet on how to use it. Check it out on GitHub: https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet