Amazing Documentation Viewer – Dash
I've been using Dash for a while now. It started out with a really odd looking cat as the icon, and it was a little iffy in the beginning, but it got better - a lot better. Today, it's the best documentation viewer I have ever used. It's just stunning. And it's fast. I can't believe how fast it is, but maybe it caches everything in a docket in memory - who knows? But Wow... it's easy to use, expansive on all the docs it covers, and the speed and ease of use are simply hard to beat.
I have a set for Clojure coding which includes clojure, postgres, and Java, and I have one set for ruby - with ruby, postgres and Java (for JRuby). All told, it's amazing how access to the right docs immediately is so powerful.