Dash is an app for viewing developer documentation from tons of apis and languages. If we had access to their data we would have access to a ton of documentation in one fell swoop.
They don't seem to have an api. But I wonder if its worth having a conversation with them about it. Just thought it might be worth looking into.
Also Dash is for OSX, but there is a similar thing for Linux called Zeal (http://zealdocs.org/) which seems to use the Dash docsets. So maybe we can do whatever Zeal is doing. I think they just downloaded the Dash docsets. Maybe we could make fatheads from that data.