For those Mac-centric developers out there.
I’m a fan of the Dash API documentation utility for OS X. I’ve generated a RhinoCommon docset - using Doxygen - that comes into Dash nicely. This allows you to search the RhinoCommon API really fast.
If you already have Dash installed, you can have Dash subscribe to the docset feed by cutting and pasting this link
into Dash (Preferences > Downloads Tab > Plus Sign > Docset Feed URL). You will get automatic updates to the docs when they change.
If you don’t have Dash installed, you can still download the docset from this link, but you will have install and keep updates in sync manually.