A Compendium of NP Optimization Problems - By P. Crescenzi and V. Kann; KTH Stockholm. A continuously updated version of the appendix from the book "Complexity and Approximation" (Springer, 1999). The Art of Computer Programming (TAOCP) - By Donald E. Knuth. Bibliographic details of the published volumes (1-3, various editions and translations) and on-line beta versions of parts of volume 4, "Combinatorial Algorithms". Data Structures and Algorithms with Object-Oriented Design Patterns in C++ - A web text by Bruno R. Preiss of the University of Waterloo. Handbook of Algorithms and Data Structures - By Gaston H. Gonnet and Ricardo Baeza-Yates. The preface, table of contents, index and all source code of this handbook. The main goal is to make available through Internet the source code of many algorithms (in C and/or Pascal) that have been already tested. Algorithms and Complexity - A downloadable textbook by Herbert S. Wilf. Each chapter is available as compressed PostScript or PDF. Data Structures by R. K. Ghosh - Course materials, animation applets, links to on-line books and other related Internet resources. The Art of Computer Programming - By Donald Knuth. Homepage of the classic text. Hacker's Delight - Offers a collection of programming tricks at the bit level, including a superoptimizer program for RISC computers.