MSWLogo

George Mills developed it at the Massachusetts Institute of Technology (MIT).

It also supports a Windows interface, so input/output (I/O) is available through this GUI, and keyboard and mouse events can trigger interrupts.

Simple GIF animations may also be produced on MSWLogo version 6.5 with the command gifsave.

MSWLogo has evolved into FMSLogo: An Educational Programming Environment, a free, open-source implementation of the language Logo for Microsoft Windows.

It is released under the GNU General Public License (GPL) and is mainly developed and maintained by David Costanzo.

MSW Logo windows
Animated gif with turtles in MSWLogo ( Lemniscate of Bernoulli ) [ 1 ]
Animated gif with turtle in MSWLogo ( Limaçon )