There are times on large projects where a subcontractor, owner, or other interested party needs to view a Microsoft Project generated schedule, but with no viewer available from Microsoft this can be a problem. While there are 3rd party software applications available, these still cost money after a fixed demo period.
Fortunately, Project Viewer Central, has a free online viewer, that can allow people to view Project files anywhere (as long as they are smaller than 400kb). This is a good tool to view Project files on computers where project is not installed, or for owners or clients who need to view the information.