December 17th, 2009


Terje Norderhaug wants you to know about MCLIDE:


MCLIDE is a free open source Macintosh IDE for Lisp implementations on any platform. It's a double-clickable, stand-alone development environment that connects to a Lisp either locally or through the network.

The first public beta of MCLIDE 1.0 is now available from:

This version of MCLIDE works with Clozure CL (a.k.a. OpenMCL) and Macintosh Common Lisp (MCL) as target lisp implementations. Support for a number of other lisp implementations on different platforms is under development.

MCLIDEs user interface is based on the mature IDE of Macintosh Common Lisp. It provides rich interactive development and debugging tools in the form of dialogs interacting with the target Lisp.

MCLIDE provides a consistent developer experience regardless of the Lisp. It can be used on the same computer as the Lisp system, or target one or more Lisp implementations on other computers or operating systems.

Special thanks to Peter Paine for substantial feedback and suggestions. His involvement has been essential in moving MCLIDE forward. Glen Foy has provided a lisp syntax styling utility as an optional plug-in. MCLIDE has also benefitted from contributions by Shannon Spires and Madhu, among others.

Follow the progress of MCLIDE at

-- Terje Norderhaug

Check out the MCLIDE screenshots for some Lispy eyecandy.