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Certificate Transparency search that groups related certificates

Certificate Transparency search that groups related certificates

by rellem·Jun 29, 2026·2 points·0 comments
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AI Analysis

●MidSolve My Problem

Certificate grouping is useful, but crt.sh and Facebook CT already do CT search.

Strengths
  • •Groups certificates by SAN set for cleaner domain overview
  • •Deduplicates pre-certificates and final certificates automatically
  • •Mobile-responsive with multiple search scope options
Weaknesses
  • •CT search is solved category with established free alternatives
  • •Marketing funnel for paid SaaS rather than standalone product
Category
Security
Target Audience

Security researchers and DevOps engineers monitoring TLS certificates

Similar To

crt.sh · Facebook CT Search · Censys

Post Description

I've been working on a certificate monitoring SaaS for a while, and decided to create a free Certificate Transparency search tool as a way to hopefully get some more backlinks and traffic.

The main difference from other CT search tools is that it groups related certificates together. My goal was to make it easier to get an overview of what exists for a domain, and easier to spot certificates that might have been forgotten about. It's usable on mobile but looks best on a laptop/desktop.

I'm pretty happy with the result and I hope that it can be genuinely useful to some. I'd appreciate any feedback!

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