Open Source code from the Georgia Tech Humanoid Robotics Lab.
For Debian and Ubuntu, you can use APT to install packages hosted at code.golems.org.
deb http://code.golems.org/debian squeeze golems.orgReplace "squeeze" with the codename for your distribution (e.g. wheezy, precise).
sudo apt-get install libach-dev ach-utils libamino-dev libreflex-dev libmotgram-dev motgramlisp
Source code is maintained in git and hosted with github. Also, some of our works-in-progress can be accessed directly from our server.