Launched this week

CertSonar

Launched this week

SSL, domain & DNS monitoring get alerted before things break

2 followers

SSL, domain & DNS monitoring get alerted before things break

2 followers

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CertSonar monitors your SSL certificates, domain registrations, and DNS records around the clock. Get email, push, webhook, or Slack alerts 30, 14, and 7 days before anything expires — so your clients never see a browser warning or an offline site.

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Launch tags:SaaS•Software Engineering•Developer Tools

Launch Team / Built With

Framer — Launch websites with enterprise needs at startup speeds.

Launch websites with enterprise needs at startup speeds.

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Maker

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Hey Product Hunt! I'm Stefanos, the maker of CertSonar. I built this because I manage websites for clients and got burned a few times. Once by an expired SSL that scared visitors away, and once by a domain that lapsed because I missed the renewal email buried in spam. CertSonar is the tool I wished existed: add your domains, forget about it, get an alert when something needs attention. No complex setup, no dashboards to babysit. What makes it different: Checks SSL + domain + DNS together (most tools only do one) Launch pricing: €19/year for 15 domains (goes up to €29 after launch) — locked forever for early subscribers Free SEO tools at certsonar.com/tools, no signup required EU-hosted, GDPR compliant, data stored in Europe Free tier is fully functional, 1 domain, daily checks, email alerts. Try it in 60 seconds with Google sign-in. I'd love your feedback. What monitoring features would you add next?

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2d ago

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2d ago

Introduction!

CertSonar monitors your SSL certificates, domain registrations, and DNS records around the clock. Get email, push, webhook, or Slack alerts 30, 14, and 7 days before anything expires, so your clients never see a browser warning or an offline site.
Who it's for: Freelance developers and small agencies managing 3 60 client websites.

The problem: An expired SSL certificate shows a full-page browser warning. An expired domain gets grabbed by squatters. A DNS change can silently redirect visitors to phishing pages. You find out when a client calls you angry.

The solution: Add your domains, we check SSL, WHOIS, and DNS every 2 6 hours. You get alerts before anything breaks.

Key features:

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