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Threshold99 is a curated web directory that archives 832 reviewed sites across 22 subject collections. Each entry is submitted by its operator and reviewed before being admitted to the catalogue. The directory is free to browse and free to list in.

Yes. Threshold99 accepts submissions at no charge. Operators can file their site using the submission form on this directory. Following a brief review, approved entries are catalogued in the appropriate collection.

The archive is divided into 22 named subject collections, each covering a defined area of the web — from the Gaming & Wagering Archive and Healthcare & Medical Repository to the Technology & Software Repository and Travel & Hospitality Collection. Every listed site belongs to one collection.

Use the submission form linked in the site header. Provide your site address and select the collection that best matches your content. The archive team will review the submission and file approved entries promptly.

Yes. Every submission is reviewed by the Threshold99 archive team before it appears in the catalogue. The review checks that the submitted site is active, reachable, and suited to its selected collection. Sites that meet these criteria are admitted; others are declined without penalty to the submitter.

Most submissions are reviewed within a few business days. Once approved, the entry is filed immediately and becomes visible to directory browsers.

If your site's title, address, or collection has changed, you can resubmit using the standard submission form. The archive team will review the update and adjust the record accordingly.

Threshold99 archives sites across a wide range of subject areas, from travel and technology to legal services and food industry operators. Active, content-bearing sites are eligible across all 22 collections. Sites focused on harm, deception, or unlawful activity are not admitted.