We are making a collaborative business webapp that integrates project and task management using constraint enabled workflows that you can template and interconnect. In a sense, our system establishes workflow as the spine of business networking, allowing businesses internally (staff) and externally (with their customers and vendors) to collaborate on any project. We have been coding since January and are finally launching our private beta next week. (Email us if your're interested in a peek)
http://StreamFocus.com