The Human Ageing Genomic Resources (HAGR)—currently led by Dr. João Pedro de Magalhães at the Harvard Medical School—is "a collection of databases and tools designed to help researchers understand the genetics of human ageing.” Two major searchable resources offered in HAGR are AnAge, a curated animal ageing database with more than 2,000 species; and GenAge, “a curated database of genes related to human ageing.” Site visitors are encouraged to download the HAGR software, Ageing Resources Computational Tools, which “is a toolkit of Perl modules based on the Bioperl package aimed a comparative genomics.” Site users will also appreciate the solid list of related links organized into the following categories: Major Databases, Gerontology Databases, Computer Science, Comparative Biology, and Computational Biology.