First of all, Distributed Project Management tools are incredible and they change the meaning of project management. After going through these tools over and over again. I just found these small differences in the four Distributed Project Management tools that I mentioned above. From the above observations I feel that, for Windows environment PlanView, which is an n-tier software application offers very good project management with unique facilities, easy and intuitive interface, alert messages, Resource Search Engine. Since it has the bi-directional link with Microsoft Project we can also get features like Gantt Chatt. For Unix environment TeamCenter is better becaouse of Event based notifications, very interesting Drag & Drop Gannt Schedule and the facity of never getting 'user lock-out', which are not provided by WebProject.