Open Enterprise Interview: Dirk Morris, Untangle
One of the reasons the open source development methodology is so powerful is because of the modularisation that lies at its heart. This allows those with a particular expertise to work on the module they are best able to improve, and for all such modules to be slotted together thanks to the clean interfaces between them. And at a higher level, the open source world is made up of many independent projects – unlike the world of Windows, say, where the ecosystem revolves around and is dependent on Microsoft's strategic decisions to a high degree - each able to proceed at a speed and in a direction that suits them best....
On Open Enterprise blog.