Berkeley Logo
   Information on books about Logo; home of free UCB Logo system.
   http://www.cs.berkeley.edu/~bh/

Elica Logo
   Educational Logo Interface for Creative Activities: Logo-based system and many related interactive projects, for Windows; information, previews, download.
   http://www.elica.net/

Imagine Logo (Primary)
   A multimedia version of SuperLogo, designed for ease of use by children. Can save projects to the web or as standalone .exe programs. Logotron Ltd.
   http://www.logo.com/cat/view/imagine-primary.html

Imagine Logo (Secondary)
   Offers web integration, powerful animation and extensive multimedia capability. Logotron Ltd.
   http://www.logo.com/cat/view/imagine-secondary.html

Imagine Logo Companion Site
   Resource guides, project gallery, add-ons, plug-in, updates. Logotron Ltd.
   http://www.logo.com/imagine/index.html

Logo Tree Project
   Table of more than 160 known Logo implementations, past and present. Pavel Boytchev.
   http://www.elica.net/download/papers/LogoTreeProject.pdf

Logo++
   Simplified syntax Logo, very easy, within a few minutes one can start programming and drawing complex graphics with few lines of code; runs in graphical environment (Linux X11, Windows), has own editor; coded in C++. [Open Source, GPL]
   http://clpp.sourceforge.net/

SeeLogo
   A Logo variant with an emphasis on visual aspects of programming. Includes image manipulation tools, tutorials, and samples. Originated in the 1980's, with ongoing development. Dani Novak, Ithaca College.
   http://www.ithaca.edu/seelogo

StarLogo
   Specialized Logo version which lets you to control thousands of graphic turtles in parallel, which can be programmed to react to their environment.
   http://education.mit.edu/starlogo/

StarLogoT
   An extended version of StarLogo 2.0.4 for the Macintosh is available for download. Also projects, documentation, models, links and resources.
   http://ccl.northwestern.edu/cm/

TKTSLogo
   A traditional Logo interpreter designed for optimization and parallelism; under development. Hunter Family Publishing.
   http://www.thehunters.org/logo/tktslogo/

Terrapin Software
   Logo software for home and schools, projects, resources, support. Now supports Lego's Mindstorm RCX Robotic kit. Also makes Crystal Rain Forest.
   http://www.terrapinlogo.com/

TinyLogo
   Programming language and program execution environment for 3Com Palm systems; very friendly to beginning programmers or users who want a simple idea of what programming is about. Has Turtle Graphics.
   http://www.palmgear.com/index.cfm?fuseaction=software.showsoftware&prodid=3775

TurtleTracks Logo
   Versions for Java, J# for .NET, partial on-going port to C# using MS JLCA: Java Language Conversion Assistant. Downloads, documents.
   http://www.mech.upatras.gr/~robgroup/logo/turtletracks/

XLogo
   A logo learning and drawing application written in Objective-c for Mac OS X. [Open source, BSD License]
   http://xlogo.sourceforge.net/

Yellow Brick Logo
   MIT Yellow Brick Logo (MIT-YBL) is an implementation of the Logo language for the LEGO RCX Brick. Includes: An MIT-written replacement for the firmware operating system that is loaded into the RCX Brick, and Software that runs on a Macintosh or Windows
   http://el.media.mit.edu/projects/ybl/