Dash is an API Documentation Browser and Code Snippet Manager. Dash instantly searches offline documentation sets for 200+ APIs, 100+ cheat sheets and more. You can even generate your own docsets or request docsets to be included.

Devhints is a set of useful cheatsheets displayed in a stylish way

Pretty Awesome Lists crawls available awesome lists (e.g. programming, work, games, etc.), collects interesting information about each link, takes a screenshot and then makes them pretty for you to explore.