The AI Software Packages section includes subdirectories for:

agents/
Intelligent Agent Architectures

alife/
Artificial Life and Complex Adaptive Systems

anneal/
Simulated Annealing

blackbrd/
Blackboard Architectures

bookcode/
Code From AI Textbooks

ca/
Cellular Automata

classics/
Classical AI Programs

constrnt/
Constraint Processing

dai/
Distributed AI

discover/
Discovery and Data-Mining

doc/
Documentation

edu/
Educational Tools

expert/
Expert Systems/Production Systems

faq/
Frequently Asked Questions

fuzzy/
Fuzzy Logic

games/
Game Playing

genetic/
Genetic Algorithms, Genetic Programming, Evolutionary Programming

icot/
ICOT Free Software

kr/
Knowledge Representation, Semantic Nets, Frames, ...

learning/
Machine Learning

misc/
Miscellaneous AI

music/
Music

neural/
Neural Networks, Connectionist Systems, Neural Systems

nlp/
Natural Language Processing (Natural Language Understanding, Natural Language Generation, Parsing, Morphology, Machine Translation)

planning/
Planning, Plan Recognition

reasonng/
Reasoning (Analogical Reasoning, Case Based Reasoning, Defeasible Reasoning, Legal Reasoning, Medical Reasoning, Probabilistic Reasoning, Qualitative Reasoning, Temporal Reasoning, Theorem Proving/Automated Reasoning, Truth Maintenance)

robotics/
Robotics

search/
Search

speech/
Speech Recognition and Synthesis

testbeds/
Planning/Agent Testbeds

vision/
Computer Vision