For the longest time we utilized TextMate as our code editor of choice for use with Unity related developments. However, we longed for the functionality that we got accustomed too in Visual Studio. We had heard about MonoDevelop being ported to run on Mac, but it was in pretty rough shape. We decided to hedge our bets and put our weight behind using it for everything Unity related, no matter the platform. We started creating an addin to increase our own productivity and add some of the features that we were used too in other IDEs.
The project has evolved overtime to mainly be about parsing the included documentation with Unity into the MonoDoc format, and with Unity coming on board with MonoDevelop and building their own first-party addins for it, we could not be happier.