Dash is an API Documentation Browser and Code Snippet Manager. Dash helps you store snippets of code, as well as instantly search and browse documentation for almost any API you might use (for a full list, see the screenshots). Dash is not free, you will have to purchase Dash using an In-App purchase. Dash is free to download so that you can test Dash out as much as you want, in order to determine if it's the right tool for you.
Documentation Browser Features:
✔ Offline Documentation: iOS, OS X, Man Pages, ActionScript, Akka, Android, Arduino, C++, CakePHP, Cappuccino, Clojure, Cocos2D, Cocos3D, Corona, CSS, Django, Drupal, Emacs Lisp, Erlang, Groovy, Haskell, HTML, Java, JavaFX, JavaScript, jQuery, Kobold2D, Lua, Node.js, MySQL, Perl, PHP, PostgreSQL, Python, Qt, Redis, Ruby, Ruby on Rails, Scala, Sparrow, SQLite, Symfony, Twisted, TYPO3, Unity 3D, Vim, VMware vSphere, WordPress, XSLT, XUL, Zend.
✔ Supports docsets generated using popular tools like Appledoc and Doxygen.