Managing multiple project can be very not effective if you are not supported by the right tool. Focus and prioritation of a project manager must be on the project and must not on the tool, however without the right tool you are not possible to direct your projects into the right point.
There are a lot of tools in the market now, which is offered either by SAAS model and the normal installation model. However whatever tools that you are selected it must be able to do several key tasks i.e. Project Registration, Project Portfolio and prioritation, Resource Registration, Resource Time Sheet, Project Cost and Resource Tracking, Project Plan Development.
Several solution that you can choose in the SAAS model that worth to look at is Innotas, as well as @task This project management tools is very informative as well as it has moved also to application portfolio management which overall give a complete set of IT governance tools. While for the full blown Enterprise Project Management, the recent Microsoft Enterprise Project Management is a strong strong solution that you can evaluate. This tool has been much improved from its previous version and be able to compare with Primavera Solution who has been acquired by Oracle
If you prefer to look for more SAAS type of solution, this link would be able to help you. This site give a list for all SAAS solution that you can possibly have.
