That would depend on what you're trying to accomplish and who you are as a manager and individual. Off the top of my head I can tell you that Podio, Asanna and Basecamp are all popular project management tools. Which one you use really depends on you and the features you want. On a personal level I use Trello which I make work for me. It has the features I want and allows me to display information that seems logical to me. I suggest that you play around with all them and find which one works best for you. If I'm off the mark and you're asking about a specific system I suggest scrum. Although scrum is most talked associated with building agile products I've successfully used it on a wide variety of projects technical and non technical.

Hope this helps and best of luck!