About Threshold55
Threshold55 is a free web atlas that maps and indexes reviewed sites across 22 charted territories. The atlas currently holds 830 entries, each filed by domain, category, and description after passing editorial review. There are no fees for browsing or submitting.
Each territory in the Threshold55 atlas corresponds to a sector of online activity — from wagering platforms and health services to travel operators and technology providers. Sites are organised within their territory by domain, making the atlas straightforward to navigate whether you are looking for a specific type of resource or browsing a section at large.
Submitting a site to Threshold55 is free of charge. After submission, each entry is reviewed before being added to the relevant territory. The process is designed to keep the atlas useful and free of low-quality entries without placing unnecessary barriers on legitimate sites.
The Threshold55 atlas is updated regularly as new submissions are reviewed and approved. Sites that remain active and well-maintained stay in the record indefinitely. There is no subscription or renewal requirement for listed sites.
If you operate a site that would be a useful addition to one of the 22 territories, the submission form is available on every territory page. Select the section that best matches your site and file your entry at no cost.