Alternatives

Products that do what CertLens does

Diagnose TLS certificate trust issues instantly

1. 1CS
   CertStream – See SSL certs as they're issued in real time▲142

   2017 · certstream.calidog.io

2. 2CF
   CertRadar – Find every certificate ever issued for your domain▲21

   Jan 2026 · certradar.net

3. 3FC
   Free Certificate Monitoring via RSS▲120

   2024 · raphting.dev

4. 4
   SSL Monitoring Solution▲6

   Monitor SSL certs and avoid unexpected downtime

   2025

5. 5
   CertGuard▲2

   Professional ssl certificate & website monitoring

   Nov 2025 · certguard.au

6. 6
   Pulsetic▲412

   Know when your site is down before your customers do

   2020

7. 7
   SSL Certificate Checker▲11

   Check SSL certificates across public endpoints

   Jul 2026 · apify.com

8. 8
   Snitch▲86

   SSL Certificate Monitoring and Alerting

   2014

9. 9
   ssleek▲92

   A straightforward approach to certificate management

   2024

10. 10CT
    Certificate Transparency Log Monitor▲53

    2016 · sslmate.com

11. 11NH
    Never have an SSL certificate expire again▲40

    2022 · haveibeenexpired.com

12. 12CF
    CertKit for automating SSL certs to Windows, JKS, and appliances▲7

    We’ve been managing web infrastructure for a long time. For most of that time, certificate management meant buying a cert, copying it to wherever it needed to go, and setting a calendar reminder. That works when certificates last a year. It stops working when lifetimes drop to 47 days. Certbot is the obvious answer but it doesn’t cover everything. It requires ACME on each server, which means each server needs to be internet-reachable or have DNS provider access. That rules out Windows servers, JKS keystores, and appliances that can’t run Certbot or speak ACME at all. CertKit handles ACME…

    Apr 2026 · certkit.io

13. 13
    SSL Checker Tool▲84

    Free way to identify SSL configuration issues

    2019

14. 14
    Oh Dear▲154

    Monitor your entire website, not just the homepage

    2020

15. 15
    Certopus▲70

    Design & deliver verifiable certificates

    2022

16. 16
    SSL Monitor▲1

    Monitor your SSL certificates. Get alerted before it expires

    Dec 2025 · sslmonitor.es

17. 17XC
    X509-certificate-exporter – Prometheus exporter for TLS cert expiration▲8

    Certificates expire silently. Kubernetes won't warn you, and most teams find out when something breaks. This exporter watches PEM files, kubeconfigs, Kubernetes TLS secrets, and PKCS#12 bundles, and exposes expiration as Prometheus metrics you can alert on. It works standalone too, no Kubernetes required. A Grafana dashboard is included. The new release is a major rewrite, built from experience running this across a large number of production clusters. The main pain point it addresses: at scale, with thousands of certificates, the exporter was putting too much pressure on the Kubernetes API.…

    May 2026 · github.com

18. 18
    CertWarden: SSL Expiry Tracker▲10

    Track SSL expiry before it breaks your site

    Feb 2026 · apps.apple.com

19. 19
    CertAlert.pro▲3

    SSL expiration & server health monitoring

    2025

20. 20
    CertChecker▲1

    Never find out an SSL cert expires too late

    23d ago · certchecker.dev

21. 21TC
    TLS cert expiration dashboard▲40

    2016 · github.com

22. 22
    SecurityLens▲6

    Domain Health and Security

    Oct 2025

23. 23
    KIT.domains▲28

    Domain infrastructure monitoring across all registrars

    Mar 2026 · kit.domains

24. 24
    SSLPanel▲3

    Manage SSL certs for all your sites — simple & free

    Dec 2025 · sslpanel.com.ru

Ranked by how close each launch is in meaning, then by votes. Refine with a description →