Implementations

For MSWLogo or UCBLogo. P. A. Dreyfuss.

Specialized Logo version which lets you to control thousands of graphic turtles in parallel, which can be programmed to react to their environment. MIT.

A logo learning and drawing application written in Objective-C for Mac OS X. [Open source, BSD License] Jeff Skrysak.

Offers web integration, powerful animation and multimedia capability. Logotron Ltd.

Logo-inspired open-source translatable programming environment for the KDE Desktop. Cies Breijs.

Versions for Java, J# for .NET, partial on-going port to C# using MS JLCA: Java Language Conversion Assistant. Downloads, documents.