Circular9 began as a running tally of websites compiled from open public records, with each domain entered once the site was confirmed live and serving visitors. The name reflects the method: a circular, in the old business sense, is a notice sent to a defined list of recipients — and the directory is, in essence, a circular sent to anyone who wishes to consult the ledger. The directory is organised into twenty-two named columns, each corresponding to a broad trade or subject. One of these is an open folio that collects entries which do not belong clearly to any single named column. Within each column, accounts are arranged alphabetically by domain, allowing a specific entry to be located without browsing the full register. Every account in Circular9 was checked for liveability before posting. Sites that were unreachable, parked, or presenting no substantive content at the time of review were passed over. This does not constitute an endorsement: the directory records where a site was found at a given point in time, not what it offers or how reliably it operates. Submissions are accepted at no charge. Anyone operating a live website may file the domain through the submission form on this site. Accepted accounts are posted to the most relevant column at the next available revision; accounts that fall outside the directory scope will not be posted. Circular9 does not sell or distribute the information it holds. The ledger is kept as a reference for visitors who want a direct list of sites in a given field, without algorithmic ranking or sponsored placement distorting the order of entries.