I was a previous subscriber to WebWork when it was fundamentally just a time tracking tool. It worked well but we then moved to another 'all-in-one' project/task management, messaging, timetracking app which was good, but far from perfect.
When I saw WebWork here on Appsumo, I subscribed again to see how far it had progressed. The answer is a long, long way.
It's a very, very good project/task manager, has excellent messaging funcionality, exceptional time-tracking and a super clean interface.
The support is very responsive and best part is the continual development.
I really think this can be a killer app moving forward.