PIEmatrix is hands down the best lightweight PM and Process Tool on the market. It allows you import all of your currently running projects from Microsoft Project seamlessly. And, you could get your whole team set up in only a day or so. Although they are not as well known as some of the big guys (e.g. AtTask), their product is easy to use and well supported. Best elements of PIEmatrix are: - Fast interface. - Completely SaaS, pick up from any computer. - Library feature: you can find existing templates and store your teams templates. I recommend you check our PIEmatrix.