Snipper.ml - A simple snippet manager in the menubar
Devhints - TL;DR for developer documentation
Snipline - Command-line snippet organiser for power users
Kite - Kite helps you write code faster by bringing the web's programming knowledge into your editor.
PasteCloud - Store pieces of text or code and share it with everyone.
Gisto - Code snippet manager that runs on GitHub Gist