- Santa Fe Institute (1)
- IIASA - International Institute for Applied Systems Analysis
 - Wolfram, Stephen@
- MultiAgent Systems
- News and information on multiagent systems research and applications. - Complexity Society
- Provides a focal point for people in the U.K. interested in complex systems theory and its application in organisations. For people in business, science, education, and government. - Complexity Digest
- Aims to collect and disseminate online complexity science related information to anybody interested in the topic. - Group Method of Data Handling (GMDH)
 - EVALife: Complex Systems and Biologically Inspired Models
- Interdisciplinary research project on the mutual influence between information technology and biology in order to study and exploit emergent mechanisms in organic and engineered systems. - SAT Live!
- Offering updated links for the Boolean SATisfiability problem (SAT). - Complex Systems
- Journal devoted to the science, mathematics, and engineering of systems with simple components but complex overall behaviour. - Cybernetics and Systems Theory
- Introduction to and extensive overview of resources related to cybernetics and general systems. - New England Complex Systems Institute (2)
- University of Maryland, College Park Institute for Systems Research
 - Center for Complex Systems and Brain Sciences - Florida Atlantic University
- Working to understand the mechanisms and principles underlying complex behaviour on all levels, from molecules and cells to whole brain functioning. - University of Michigan Center for Study of Complex Systems (CSCS)
- Includes information about research, teaching, and people at the centre. - Southeastern Symposium on System Theory (SSST)
- Features invited and contributed technical papers on theoretical and applied issues associated with the organisation, modelling, analysis, simulation, control, and evaluation of systems. March 18-19, 2002 at the University of Alabama at Huntsville. - Consilience: Case Studies in Complex Adaptive Systems
- A student-initiated seminar. Includes an online discussion and projects about various complex phenomena. - 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. - Dynamics of Multiagent systems

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