ACSLogo is a Logo Interpreter for Mac OS X.
Logo is a popular language used to teach simple programming by guiding the progress of a ‘turtle’ which moves around a graphics screen:
A new version is available (May 2011) — 1.5.1. It contains some enhancements and bug fixes - for a list of changes, see Release Notes.
There’s a new user guide and Command Reference for this release. You can download them from ‘Other Stuff’ on the right.
Simple commands can be used to make the turtle move in a straight line or change direction, and complex patterns can be built up from the simple commands using procedures and recursive techniques:
Graphics can be exported as TIFFs, JPGs, PNGs, PDFs or SVGs.
ACSLogo requires MAC OS X. The current version, version 1.5.1, requires Leopard (OS X 10.5) or above.