A computer science professor at the State University of New York maintains this online repository, which serves "as a comprehensive collection of algorithm implementations for over seventy of the most fundamental problems in combinatorial algorithms." The algorithms are implemented in a variety of programming languages, from C++ to FORTRAN. Seven general categories are listed to facilitate finding a particular implementation. The code for each algorithm was gathered from many different sources and is now housed in one spot on this site, making it easy for programmers to use pre-written code for common problems rather than having to write their own.