835 sites filed across 22 editorial desks — the open web, organized like a newsroom.
Submit your site to the appropriate editorial desk and join 835 operators already on file. Sentinel42 reviews every submission before assigning it to the right beat. Free to submit — no charge, no sponsored placement, just editorial review.
+ Chart your siteSentinel42 is a web directory organized along editorial lines. Think of it as a newsroom that files dispatches about the open web — 835 active site listings assigned to 22 specialist desks covering sectors from health and medicine to industrial fabrication and adventure travel.
Yes. Submission to Sentinel42 is free. There are no listing fees, no sponsored placement options, and no tiered packages. Every site in the directory was admitted through the same editorial review process.
Sites are assigned to one of 22 editorial desks based on their primary subject matter. Each desk covers a distinct sector — for example, the Health & Medicine Desk, the Finance & Markets Desk, or the Technology & Software Bureau. If a site does not fit a specialist desk, it is assigned to the General Assignment Desk.
Use the Add a Site form accessible from the main navigation. Provide your site's URL, select the most appropriate desk category, and submit. Sentinel42's editorial team will review the submission and, if approved, file it to the relevant desk.
Review times vary depending on submission volume. Sentinel42 does not publish a fixed turnaround time. Submitting to the correct desk category helps speed the process — submissions in clearly the wrong category take longer to reassign and review.
Not every submission is admitted to the directory. Sites may be declined if they are non-operational, duplicate an existing filing, or do not meet Sentinel42's standard for an active web presence. There is no appeals process; operators may resubmit after resolving the issue that led to the initial decline.
At this time, Sentinel42 does not offer a self-serve listing update facility. Operators who need to correct factual information in their filing should submit a note via the Add a Site form referencing their existing listing.
Sentinel42 operates as a newsroom-organized web directory, filing dispatches across 22 specialist desks that cover everything from dental practices and financial services to adventure travel and industrial fabrication. The current file holds 835 active site listings, each reviewed for an operational web presence before being admitted to the appropriate desk. Unlike automated directories, Sentinel42 is organized around editorial beats — if a site serves the Finance & Markets Desk, it sits alongside other capital-market operators; if it belongs on the Gaming & Wagering Bureau, it is filed there. Operators submit their sites through the standard submission form and await desk review. Sentinel42 accepts free listings from site operators with verifiable public web presences.