Another example is Blender (3D). Created with and by the people who are using it (http://wiki.blender.org/index.php/Dev:Source/Architecture http://wiki.blender.

Another example is Blender (3D). Created with and by the people who are using it (http://wiki.blender.org/index.php/Dev:Source/Architecture http://wiki.blender.org/index.php/Dev:Source/Architecture). I think it's one of the best software programs I've ever seen. Both compelling and Original/Unique.