YoTask

Using Yotask you can send Task, to the users in the network and keep track of that Task. For e.g. Joy sends the Task to Rahul and Hari of same network, as soon as Rahul and Hari completes that Task they will close that Task, and Joy will also get to know that Task given to Rahul and Hari is done. It is as simple as using an email account, but Yotask is not a mailing service, it's a Task Management System within the users of that network, with lots of different Functionalities. With YoTask, one can be Associated with infinite network, and can Add infinite users under a network with only one user account, by giving them their Designation, Department and Different Rights, to perform under you or your Company's Network. The best part is you can view the Whole Network, which display as an Organizational Chart. Even you can track the communications done by the members of your group with other users of the same group, who are under your direct branch only.
More at:http://www.yotask.com/