Cert Spotter
SSLMate
π‘ Pick it for certificate-transparency alerts and stronger detection of unauthorized certificate issuance.
Cert Spotter monitors certificate transparency logs to detect certificates issued for domains you control. It is built for security teams and developers...
Pros
- Strong certificate-transparency monitoring rather than simple date checks
- Open-source command-line client and API support
- Can detect unexpected certificates issued for your domains
Cons
- More security-oriented than beginner-friendly
- Requires more setup than hosted SSL reminder services
- Certificate-transparency coverage does not replace all private certificate inventory checks
Free for public certificates; paid plans available