ExpiryOwl VS Digraph.dev

ExpiryOwl's answer

One hostname, four checks, one tool: SSL certificate, domain registration, DNS and uptime, grouped by client. It also flags a Let's Encrypt, ZeroSSL or Google Trust Services certificate that is still being served after the point where it normally renews, usually weeks before it expires. For Let's Encrypt it reads the renewal window the CA publishes (ARI).

ExpiryOwl's answer

Many uptime monitors don't watch domain registration, so agencies pay for a second tool. ExpiryOwl covers certificates, domains, DNS and uptime in one plan, with white-label client reports and status pages included from the Agency plan ($29 a month for 250 domains), not sold per page. One price per agency: no per-check, per-page or per-client fees.

ExpiryOwl's answer

Web agencies, freelancers and WordPress maintainers who look after many small client websites and need to know before a client's certificate or domain runs out.

ExpiryOwl's answer

I looked after a client's site and found out about problems when the client told me. Certificate lifetimes are dropping (100 days from 15 March 2027, 47 days from 15 March 2029), so certificates renewed by hand will need replacing about four times a year, then about eight. I built ExpiryOwl so an agency sees every client's certificates and domains on one page and hears about a failed renewal before the client does. It is independently run, from Bahrain.

ExpiryOwl's answer

Next.js, React and TypeScript, SQLite with Drizzle, a Node.js background worker for the checks, RDAP for domain data, Certificate Transparency logs for subdomain discovery, and Cloudflare in front.