Zeal - Zeal is an API Documentation Browser.
Simple Snippets - Simple Snippets is place to easily create and manage your code snippets. The main features of the Simple Snippets: code highlighting, snippet groups, public and private snippets.
DevDocs - Open source API documentation browser with instant fuzzy search, offline mode, keyboard shortcuts, and more
GitHub Gist - Gist is a simple way to share snippets and pastes with others.
Snippely - Snippely is a basic text and code organizational tool.
3Cols - Manage your code snippets in the cloud fast, easy and free for personal use forever.