From my discussions with various construction project management providers, there has been a large number who know offer web-based systems. This creates a variety of benefits in that the provider is responsible for maintaining all the hardware and staffing an IT department. Essentially all the owner does is log in to the program, via the web, and controls all of the features offered from the system. In addition, all documents and other materials associated with the project are housed by the provider, eliminating the need of the contractor to secure storage space for these documents. SoftwareAdvice.com recently published an article entitled "Tailwinds for Web-Based Construction Management Systems" that talks more about web-based programs and how contractors may benefit from them.