Circular28 is a catalogued web directory organised in the tradition of the printed gazetteer — a systematic reference index of sites, arranged by subject, that allows the reader to locate and survey the landscape of the indexed web. The directory came into being with a simple aim: to compile a reliable reference of web presences across a broad range of sectors, useful to researchers, practitioners, and general users seeking orientation in a given field. Circular28 is not a search engine. It does not rank sites by traffic or commercial importance. It catalogues. Entries are submitted voluntarily by site operators and arranged into 22 subject sections covering domains from healthcare and legal services to travel, technology, and beyond. The directory currently holds 829 entries, each representing a site that has met the basic criteria for inclusion. Circular28 accepts new submissions without charge. Operators wishing to register a site may do so via the submission form. Submissions are reviewed before listing to confirm the site is reachable and that the submitted details correspond to actual content. The directory is maintained as a public reference resource. No commercial relationship exists between Circular28 and the sites it catalogs. Inclusion does not imply endorsement, and users are advised to conduct appropriate due diligence before engaging any listed service.