LessTif is a no longer developed free software reimplementation or clone of the Motif computer programming toolkit, developed by the Hungry Programmers.
As opposed to Motif, which was distributed until October 2012 under a proprietary license that could require the payment of royalties, LessTif was developed under the GNU Lesser General Public License (LGPL). The licence of Motif was the main motivation for the development of LessTif.
A screenshot of a program using LessTif (xmabacus).
The project aimed for full source and binary code compatibility with Motif. While this was not achieved, many Motif applications could run with LessTif or can be compiled with it.
LessTif has had no code commits since 2009. It was superseded by the release of the original Motif toolkit as open source under the LGPL in 2012.