- IIASA - International Institute for Applied Systems Analysis - International Institute for Applied Systems Analysis
- Complexity On-line - collaborative project that aims to develop a comprehensive information service about complex systems, structures and processes that involve non-linearity.
- Computational Beauty of Nature, The - companion site for the book by Gary William Flake. Contains applets and source code for simulations of fractals, chaos, complex systems, and adaptation.
- Group Method of Data Handling (GMDH) -
- Complexity Society - provides a focal point for people in the U.K. interested in complex systems theory and its application in organizations. For people in business, science, education, and government.
- Cybernetics and Systems Theory - introduction to and extensive overview of resources related to cybernetics and general systems.
- MultiAgent Systems - news and information on multiagent systems research and applications.
- Joint Committee on Complexity - a joint venture of Indiana State University, Rose-Hulman Institute of Technology, Ivy Tech State College, and St. Mary-of-the-Woods College.
- Dynamics of Multiagent systems -
- Consilience: Case Studies in Complex Adaptive Systems - a student-initiated seminar. Includes an online discussion and projects about various complex phenomena.
















