ScheduleReader is a software that opens XER files without Primavera P6. The tool is useful for project members that only need to view the project plan. It runs on Windows devices and have two versions: Standard and PRO.
Seavus Project Viewer is a viewer for MS Project files that allows users to open, view and print project plans (.mpp files). Project managers create plans in MS Project, whereas team members view those plans with Seavus Project Viewer.