Threshold

Threshold is a web directory that catalogues websites in the tradition of the library card catalog — organised by subject section rather than ranked by algorithm. The directory holds 828 entries across 22 sections, each submitted by the site operator and reviewed before inclusion.

Yes. Submitting a site to the Threshold catalog is completely free. There are no listing fees, renewal charges, or premium placement options. Every approved entry appears in the index on equal terms.

Visit the submission form linked at the top of every page. Enter your site URL, select the subject section that best matches your content, and optionally provide a short description. After a brief editorial review, approved entries are added to the live catalog.

The catalog is arranged into 22 subject sections covering fields from health and medicine to computing, travel, legal services, and more. Within each section, entries are listed in order of submission. No ranking or weighting is applied to individual holdings.

Most submissions are reviewed within a few working days. The review is a basic check that the site is live, relevant to the chosen section, and meets the directory standards. The aim is systematic inclusion rather than selective editorial curation.

Threshold accepts submissions from any legitimate web resource that corresponds to one of the 22 subject sections. Commercial sites, informational resources, service providers, and community organisations are all welcome. Sites that are inaccessible, contain harmful content, or do not correspond to any subject section will not be approved.

To request a change or removal of an existing entry, use the contact information on the About page. Corrections to URLs or descriptions can usually be accommodated upon request.