Ask HN : What do you look for in a project monitoring app?

We are currently redefining needs for our project monitoring app and we are aiming at collaborative teams (likely less than 10 people) and we need your advices.

Note : We use the term "project monitoring" instead of project management because it answers the question of how the project goes (real VS estimate, who's doing what now, what are the problems, what is being said) in real-time instead of planning it and then never look back at your stuff.