Learning Lab at CMU, School of Computer Science
Software systems that learn user preferences, Robot learning, text learning, generic learning methods.
http://www.cs.cmu.edu/afs/cs.cmu.edu/project/theo-5/www/learning.html

University of London, Royal Holloway
CLCR: Computer Learning Research Centre
http://www.clrc.rhul.ac.uk/

Machine Learning at UC Santa Cruz
Research on decision theory, neural networks, computational biology, computational geometry, theoretical computer science, on-line learning algorithms, computational learning theory, reinforcement learning.
http://www.soe.ucsc.edu/programs/cs/graduate/research.html#ai

Future Learning Environment
Fle3 Learning Environment is a web-based system for computer supported collaborative learning (CSCL).
http://fle3.uiah.fi

Action Centred Learning
Training venues serving most of England and Wales, supported by computer based learning, experiential learning and in-house HRD management training, mentoring and consultancy services.
http://www.actioncentredlearning.co.uk

(USA) The Unsupervised Learning Group (ULG) at UT Austin
ULG "is a group of graduate students from the Computer Science and Electrical and Computer Engineering departments, who share interests in data mining, machine learning, information retrieval, pattern recognition and related areas."
http://www.lans.ece.utexas.edu/ulg/

Guvenir, H. Altay
Bilkent University. Machine learning, data mining, and computer-aided language learning.
http://www.cs.bilkent.edu.tr/~guvenir

eLearning Forge
At eLearning Forge we develop and build e-learning solutions that meet your training needs.
http://www.elearningforge.com

The CPU Project
The Constructing Physics Understanding in a Computer-Supported Learning Environment Project (or the CPU Project) is aimed at creating laboratory and computer-based materials to support a learning environment where students take primary responsibility for developing valid and robust knowledge in physics.
http://cpucips.sdsu.edu/web/CPU/default.html

LanSchool
Enhances learning in a computer lab by replicating the teacher's monitor to all computer monitors as well as allow a teacher to control a students computer. Site includes a detailed features list, a free demo, and support.
http://www.lanschool.com/