Traffic Management software recommendations

I work at a multi-offering Arts Center as the Marketing Project/Traffic coordinator.  We currently try our best to traffic the several hundred marketing projects and keep all key players aware of project deadlines through SharePoint (Microsoft Application).  This software has become very cumbersome to us in relation to traffic management, and I hope that others in the forum can offer recommendations on other traffic management software that they have been happy with and have met their needs.

 

Thanks in advance for your help!