About Keystone28
Keystone28 is a hand-maintained curator's index of the working web — a classified register of active websites organised by trade and topic rather than by traffic rank or advertising spend. We currently hold 833 entries across 22 sections, each submitted directly by the site's operator and logged by our curatorial team.
The index is arranged the way a subject catalog in a reference library is arranged: sections are defined by clear, bounded topics; entries within each section are ordered chronologically by submission date; the whole structure is browsable without a search box, though one is provided for convenience. We do not rank, grade, or editorially endorse the sites we list — we record that they exist and that they were submitted in good faith.
Submissions are open and free of charge. When a site is submitted, our curatorial process confirms that the domain resolves and that the entry is not a duplicate of an existing record. We do not assess content quality, business legitimacy, or suitability for any particular purpose — those judgements belong to the reader.
We retire entries when a domain goes dark or when an operator requests removal. The index is not a static snapshot: it is updated continuously as new submissions arrive and old entries age out. If you find a broken link in our catalog, the submission form accepts correction requests as well as new entries.
Keystone28 takes its name from the architectural keystone — the central wedge that holds an arch in place. A well-maintained index performs the same function: it holds a structure of information together, letting each part support the others. We have been building and curating this index since our founding and intend to keep doing so.