- $1 million for solving P vs NP - One of the Prize Problems named by the Clay Mathematics Institute of Cambridge, Massachusetts (CMI).
- Algorithms and Complexity Research Area - The Oxford University Computing Laboratory's area on algorithms and complexity, with links to lectures and information.
- 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.
- Average-Case Complexity Forum - Introduction and survey papers.
- 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.
- A Compendium of NP Optimization Problems - This is a preliminary version of the catalog of NP optimization problems.
- Complexity of Algorithms - A list of topics from a Computer Science course involving complexity of algorithms. HTML and PS format.
- Complexity Theory - Two set of lecture notes by Prof. Oded Goldreich, Weizmann Institute.
- Complexity Zoo - Description of the 462 complexity classes and relations between them hosted at Caltech as a part of Qwiki project.
- Computability and Complexity - An online course on complexity.
- Computational Complexity and Programming Languages - Summaries of talks of the DIMACS workshop (July 1996), collected by James Royer.
- Computational Complexity Theory - Definition of the subject, links.
- Computational Complexity Theory - Wikipedia article.
- Computational Complexity Theory - Course COMS 30126: Computational Complexity Theory, Department of Computer Science, University of Bristol
- Constraint Satisfaction Problems - Research group in the Computing Laboratory, Oxford University.
- 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.
- Efficient algorithms and intractable problems - Course taught by Christos Papadimitriou and Umesh Vazirani at the University of California at Berkeley.
- IBM Research: Algorithms & Theory - An overview of computational models and methods and how they relate to complexity, with links to selected papers.
- Information-based Complexity - People, publications, prizes.
- Lecture notes on Complexity - Collection of lecture notes by Prof. Eric Allender, Rutgers University.
- Parameterized Complexity - Brief description, list of workers and problem compendium, compiled by Todd Wareham.
- Probabilistically Checkable Proofs and Approximation - Pointers to some survey articles and their authors, by M. Bellare.
- SAT Live! - A collection of up-to-date links about the satisfiability problem (solvers, benchmarks, articles). A discussion forum is available as well.
- 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.
- 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.
- Theory of Computation, Fall 2006 - Course 6.045J/18.400J at MIT OpenCourseWare, emphasizing computability and computational complexity theory.
