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Automata, Computability, and Complexity, Spring 2005 Course 6.045J / 18.400J at MIT OpenCourseWare with introduction to basic mathematical models of computation, Turing machines, Church's Thesis, time complexity and NP-completeness. http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-045JSpring-2005/CourseHome/index.htm

Challenging Benchmarks for SAT and CSP Includes related links, references and a summary of the results for the SAT benchmarks used in SAT Competition 2004. http://www.nlsde.buaa.edu.cn/~kexu/benchmarks/benchmarks.htm

A Compendium of NP Optimization Problems This is a preliminary version of the catalog of NP optimization problems. http://www.nada.kth.se/~viggo/problemlist/compendium.html

Complexity of Algorithms A list of topics from a Computer Science course involving complexity of algorithms. HTML and PS format. http://artemis.cs.yale.edu/classes/cs460/Spring98/contents.html

Complexity Theory Two set of lecture notes by Prof. Oded Goldreich, Weizmann Institute. http://www.wisdom.weizmann.ac.il/~oded/cc.html

Complexity Zoo Description of the 462 complexity classes and relations between them hosted at Caltech as a part of Qwiki project. http://qwiki.stanford.edu/wiki/Complexity_Zoo

Computability and Complexity An online course on complexity. http://www.csc.liv.ac.uk/~ped/teachadmin/algor/comput_complete.html

Computational Complexity and Programming Languages Summaries of talks of the DIMACS workshop (July 1996), collected by James Royer. http://www.cis.syr.edu/people/royer/talks.html

Computational Complexity Theory Definition of the subject, links. http://www.cs.umass.edu/~immerman/complexity_theory.html

Computational Complexity Theory Course COMS 30126: Computational Complexity Theory, Department of Computer Science, University of Bristol http://www.cs.bris.ac.uk/Teaching/Resources/COMS30126/

Computational Complexity Theory Wikipedia article. http://en.wikipedia.org/wiki/Computational_complexity_theory

Constraint Satisfaction Problems Research group in the Computing Laboratory, Oxford University. http://www.comlab.ox.ac.uk/activities/constraints/

ECCC - Electronic Colloquium on Computational Complexity A forum for the rapid and widespread interchange of ideas, techniques, and research in computational complexity. Research reports, surveys and books; meetings, discussions and web resources. http://eccc.hpi-web.de/

Efficient algorithms and intractable problems Course taught by Christos Papadimitriou and Umesh Vazirani at the University of California at Berkeley. http://www-inst.eecs.berkeley.edu/~cs170/fa06/

IBM Research: Algorithms & Theory An overview of computational models and methods and how they relate to complexity, with links to selected papers. http://domino.research.ibm.com/comm/research.nsf/pages/r.algorithms.html

Information-based Complexity People, publications, prizes. http://www.ibc-research.org/

Lecture notes on Complexity Collection of lecture notes by Prof. Eric Allender, Rutgers University. http://www.cs.rutgers.edu/~allender/lecture.notes/

$1 million for solving P vs NP One of the Prize Problems named by the Clay Mathematics Institute of Cambridge, Massachusetts (CMI). http://www.claymath.org/millennium/P_vs_NP/

The NP-Complete Arcade Provides applets that can be used to explore the conditions under which some well-known NP-complete problems become hard. http://hagaregn.org.uk/npsudoku/index.html

Parameterized Complexity Brief description, list of workers and problem compendium, compiled by Todd Wareham. http://www.cs.mun.ca/~harold/W_hier/W_hier.html

Probabilistically Checkable Proofs and Approximation Pointers to some survey articles and their authors, by M. Bellare. http://www-cse.ucsd.edu/users/mihir/pcp.html

SAT Live! A collection of up-to-date links about the satisfiability problem (solvers, benchmarks, articles). A discussion forum is available as well. http://www.satlive.org/

SATLIB - The Satisfiability Library A collection of benchmark problems, solvers, and tools. Provides a uniform test-bed for SAT solvers as well as a site for collecting SAT problem instances, algorithms, and empirical characterisations of the algorithms' performance. http://www.satlib.org/

Theoretical Computer Science links A collection of bookmarks to algorithms and complexity resources maintained by Heribert Vollmer at the Theoretical Computer Science Institute, University of Hannover. http://www.thi.uni-hannover.de/en/research/links/

Theory of Computation, Fall 2006 Course 6.045J/18.400J at MIT OpenCourseWare, emphasizing computability and computational complexity theory. http://ocw.mit.edu/OcwWeb/Mathematics/18-404JFall-2006/CourseHome/