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CertHalo
Catch expiring or broken SSL certificates before users do
CertHalo watches your SSL/TLS certificates from the outside and alerts you before one expires, or the moment one is renewed, revoked, changes issuer, stops matching its hostname or goes unreachable. Each check grades the full certificate health A to F. Alerts by email, Slack or Microsoft Teams, with shared team workspaces. Nothing to install, works with any host or CA. Free for 3 certificates; paid plans from $3/month.
Hi Product Hunt 👋 I'm Rahul from IncubXperts, and CertHalo is the tool we built after one too many "why is the site showing a security warning?" calls.
The usual reply is "but our renewals are automated." They are, until they aren't:
• A renewal job fails silently (expired API token, changed DNS, rebuilt server)
• The certificate renews, but the load balancer or CDN keeps serving the old one
• Some certificates were never automated: vendor portals, appliances, client domains
• Let's Encrypt has stopped sending expiry reminder emails
• Lifetimes are shrinking to 200 days now, 100 in 2027 and 47 in 2029, so there are far more renewals that can go wrong
CertHalo checks what your server actually presents to the internet, whatever tool did the renewal. You get:
✅ Reminders 60, 30, 14, 7, 3 and 1 day out (or your own schedule)
✅ Instant alerts when a certificate is renewed, revoked, changes issuer, mismatches its hostname or becomes unreachable
✅ An A–F health grade: chain, revocation (OCSP/CRL), key strength, TLS versions
✅ Alerts in email, Slack and Microsoft Teams, with shared team workspaces
It's free for 3 certificates with no card, and there's a free one-off checker at certhalo.com/ssl-checker if you just want to test a site.
This started as SSL Expiry Tracker, and CertHalo is the full rewrite. An API and webhooks are next. What would make this a must-have for your team? I'll be here all day answering questions.
About CertHalo on Product Hunt
“Catch expiring or broken SSL certificates before users do”
CertHalo was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #149 on the daily leaderboard. CertHalo watches your SSL/TLS certificates from the outside and alerts you before one expires, or the moment one is renewed, revoked, changes issuer, stops matching its hostname or goes unreachable. Each check grades the full certificate health A to F. Alerts by email, Slack or Microsoft Teams, with shared team workspaces. Nothing to install, works with any host or CA. Free for 3 certificates; paid plans from $3/month.
On the analytics side, CertHalo competes within Productivity, Developer Tools and Tech — topics that collectively have 1.8M followers on Product Hunt. The dashboard above tracks how CertHalo performed against the three products that launched closest to it on the same day.
Who hunted CertHalo?
CertHalo was hunted by Rahul S Bagal. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of CertHalo including community comment highlights and product details, visit the product overview.
Rahul S Bagal