Anandtech Frame-Getter is a GPU benchmarking program. It computes frames per second for an application that uses OpenGL or SDL. It also takes screenshots periodically, and creates an overlay to display the current FPS/time.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.
