Principia Cybernetica is an international cooperation of scientists in the field of cybernetics and systems science, especially known for their Principia Cybernetica Web website. They have dedicated their organization to what they call "a computer-supported evolutionary-systemic philosophy, in the context of the transdisciplinary academic fields of Systems Science and Cybernetics".
Major activities of the Principia Cybernetica Project are:
- Principia Cybernetica Web: an online encyclopedia
- Web Dictionary of Cybernetics and Systems; an online dictionary
- Newsletter Principia Cybernetica News
- Conferences and traditional publications
The organization is associated with:
- American Society for Cybernetics.
- Evolution, Complexity and Cognition group: a transdisciplinary research group at the Free University of Brussels, Belgium, founded in 2004 and directed by Francis Heylighen.
- Journal of Memetics-Evolutionary Models of Information Transmission (JoM-EMIT) is an international peer-refereed scientific journal
- Global Brain Group: for discussion about the emergence of a global brain.
Principia Cybernetica Web 
The Principia Cybernetica Web, which went online in 1993,Template:Cit needed is one of the first complex webs in the world. It is still viewed as one of the most important sites[by whom?] on cybernetics, systems theory, complexity, and related approaches.
Workshops and symposia 
Especially in the 1990s the Principia Cybernetica has organized a series of workshops and international symposia on cybernetic themes. On the 1st Principia Cybernetica Workshop in June 1991 in Brussels many cyberneticists attended like Harry Bronitz, Gordon Pask, J.L. Elohim, Robert Glueck, Ranulph Glanville, Annemie Van Kerkhoven, Don McNeil, Elan Moritz, Cliff Joslyn, A. Comhaire and Valentin Turchin.
See also 
- William Ross Ashby
- Complex adaptive system
- Evolutionary epistemology
- Global brain
- Manifest and latent functions and dysfunctions
- Red Queen
- Stuart Umpleby
Further reading 
- Ben Goertzel (2000), The Principia Cybernetica Project: Placing the Web at the Center of Man’s Quest for Knowledge, September 2000.
- Koen Van Damme (2007), Principia Cybernetica: An introduction.
- Francis Heylighen (2000). "Foundations and Methodology for an Evolutionary World View: A Review of the Principia Cybernetica Project" in: Foundations of Science, 5(4), p.457-490.
- Francis Heylighen, C. Joslyn & Valentin Turchin (1991). "A Short Introduction to the Principia Cybernetica Project". in: Journal of Ideas, 2(1), p.26-29.
- C. Joslyn, Francis Heylighen & V. Turchin (1993). "Synopsys of the Principia Cybernetica Project". in: Proc. 13th Int. Congress on Cybernetics, p. 509-513.