Doing a lot of project management I am working with an online tool called WRIKE.
It is easy to use and easy to implement.
It offers different views of a project (Gant chart, table, board or just a list of tasks.) when you assign a person to a task it goes into the to.do list of this person. As a project manager you can create dashboards which show you the status of the project, overdue tasks, etc. And you can also create reports and share it with people who do not have access to the tool. It is really great.
