LessTif is an implemention of the OSF/Motif standard GUI toolkit for X11. It aims to be source compatible with OSF/Motif. Most Motif apps should compile and run out of the box.
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.