Firefox Extension for Ruby on Rails, PHP, CSS, HTML, JavaScript

There is a developers extension for Firefox called DevBoi that gives easy access to documentation for Ruby on Rails, Ruby, PHP, CSS, JavaScript and HTML, among others. I first discovered it through the blog at quotedprintable.com.

Here is a screenshot of browsing Ruby on Rails classes in Firefox with the DevBoi extension:

The next screenshot shows browsing PHP functions in Firefox with the DevBoi extension:

There is something of a demo of this Firefox extension online on Martin Cohen's web site. It's not exactly like the installed DevBoi extension, but it can give you more of an idea about what it does before you install it.