Mathematical BBS, which began in 1993, is managed by a team of academics at the University of Ferrara. From this portal site, visitors can find links to associations, departments, commercial organizations, journals, and personal homepages relating to various topics in mathematics. The links are organized by topic and then by resource type and discipline. Some topics include bioinformatics, medical informatics, mathematical modelling in biochemistry, explorative statistics, genetic algorithms, neural nets, cluster analysis, random numbers, Lindenmayer systems, finite neighborhood spaces, and programming in computer sciences. The collection includes many websites from Europe, Canada, and the United States. The authors have also compiled a listing of newspapers and book publishers and sellers worldwide.