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Berkeley Logo interpreter

This is a free (both senses) interpreter for the Logo programming language.

The interpreter was written primarily by Daniel Van Blerkom, Brian Harvey, Michael Katz, Douglas Orleans and Joshua Cogliati. Thanks to Fred Gilham for the X11 code. Emacs logo-mode by Hrvoje Blazevic.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see

About this project

This uses the repository created for further UCBLogo development. The current version is 6.2

Changes for this release:

  • Added optional object oriented LOGO features ( --enable-objects )
  • autoconf based build system
  • Variety of bug fixes

Here is an overview of the repository:

The executable file in this distribution includes libraries from the wxWidgets project. The Microsoft Windows version is distributed with runtime library libgcc_s_dw2-1.dll and libstdc++-6.dll, from the MinGW project. Those libraries are also covered by the Gnu GPL. We do not distribute their source code; you can download it from their respective web sites.


To build Logo under *nix, install wxWidgets and other dependencies and then do this:

	autoreconf --install

Note that if you don't have autoconf, the release .tar.gz have already built configure files.

UCBLogo Releases

Previous versions

For getting UCBLogo previous versions such as version 6.0 if you're running wxWidgets or 5.4 if not, please visit Brian Harvey's UCBLogo GitHub repository.

The distribution for frozen platforms includes version 5.3 for DOS and Mac Classic (pre-OS X) still may be reached at Brian Harvey's personal page.