Dash is an incredibly useful Mac app that I’d highly recommend all developers check out. It lets you instantly search developer documentation (devdocs) straight from your computer:

You can configure it to check only the devdocs you use on a regular basis. For example, I have Dash configured to search the devdocs for SaaS, Rails 4, jQuery, HTML, jQuery UI, PHP, MySQL, CSS, JavaScript, Ruby, WordPress, Node.js, Lo-Dash, R, and D3.js. It supports over 150+ sets of documentation and also lets you generate your own. Dash also keeps the documentation automatically up to date as it changes.

If you want to constrain your search to a specific set of devdocs, you can prefix your search such as ruby:gsub and it will only check the Ruby docs.

I also set Cmd+Shift+D to load Dash so that I can pull it up while I’m coding, perform a search, and Alt+Tab back to Sublime without ever touching the mouse.

It’s free to try and $24.99 to buy. Give it a shot and rejoice that you’ll never again have to Google for documentation.