Now, they are announcing a new product called GeniDo.
GeniDo is a FLEX-based front-end interface for Basecamp, which you can use to manage basic lists, todos and messages within a collaborative team. All changes are synced with your Basecamp account automatically using the public API.
One twist is that being Flex based, you can use the application even in offline mode, so this could be useful for heavy Basecamp users who often face disruptions because of poor quality internet.
While right now it is not more than a front-end for Basecamp and mostly a tech-demo for Flex, they claim that over time they will add proprietary features on it themselves that extends the functionality of Basecamp.
Here is a video of their product – let me know what you think. Also, Khurram or Umair please add a link to the private beta so interested people can sign up.