1. LessTif is a free replacement for OSF/Motif(R), which provides a full set of widgets for application development (menus, text entry areas, scrolling windows, etc.). LessTif is source compatible with OSF/Motif(R) 1.2. The widget set code is the primary focus of development. If you are installing lesstif, you also need to install lesstif-clients. From Redhat 8.0 RPM

2. Lesstif is an API compatible clone of the Motif toolkit. Most of the Motif 1.2 API is in place. Motif 2.1 functionality is being improved. Many Motif applications compile and run out-of-the-box with LessTif, and we want to hear about those that don't. From Mandrake 9.0 RPM