Title: McCLIM, the free Common Lisp Interface Manager Abstract: McCLIM is a free implementation of the Common Lisp Interface Manager (CLIM). It is a portable, cross-platform, cross-window-system GUI toolkit. Besides the traditional widget-oriented GUI programming it offers an interesting high-level approach to application development. We will explore this alternative paradigm, which works with presentations of objects and commands which can be invoked on these objects. Graphical output thus is structured and CLIM remembers which output corresponds to a particular object. This frees the programmer of a lot of bookkeeping work. We will also briefly introduce McCLIM project and its history.