LispWorks is a Common Lisp implementation that comes with its own Integrated Development Environment (IDE) and its share of unique features, such as the CAPI GUI toolkit. It is proprietary and provides a free limited version.Here, we will mainly explore its IDE, asking ourselves what it can offer to a seasoned lisper used to Emacs and Slime. The short answer is: more graphical tools, such as an easy to use graphical stepper, a tracer, a code coverage browser or again a class browser.