Welcome to the start of a new chapter in computing! We're a group of software developers making the Medley Interlisp system available for use on modern computer systems.

The Medley system was created at Xerox's Palo Alto Research Center (PARC). PARC was the cradle of the modern graphical user interface and its design thinking continued with the development of Medley Interlisp, an extensible graphical operating system with nearly limitless possibilities for customization. Whatever the task, using Medley you can design a custom workflow to help accomplish it.

Interlisp was first released by Xerox and distributed commercially until its development ceased in the 1990s. Until 2009 it survived only in the hands of a few of the original developers, but now this classic software system is running again on your favorite operating system. This project is more than a trip down memory lane: our mission is to expand the scope of what Medley can do, fulfilling its promise of software tools limited only by the user's imagination. Dive in and explore the language, the tools, and the myriad applications, experiments, and playful creations that were crafted in and for Interlisp.

Feeling confused by the jargon? Don't worry, we've got you covered. Check out our glossary to learn the terms associated with our project.

Most software in this project is licensed under the terms of the MIT license.