Alternatives

Products that do what CertFleet does

SSL + uptime monitoring without the observability bill

1. 1
   CertFleet – SSL and HTTP uptime monitoring with live TLS probes and alerts

   CertFleet monitors SSL certificates and HTTP uptime in one place. It opens a real TLS handshake on port 443, tracks Certificate Transparency for new issuances, and sends alerts at 30, 14, 7, and 1 day before expiry. You can configure HTTP checks with custom methods, paths, status

   7d ago · certfleet.net

2. 2FC
   Free Certificate Monitoring via RSS▲120

   2024 · raphting.dev

3. 3
   SSL Alerts▲157

   Free service to send SSL certificate expiration alerts

   2018

4. 4
   DomainWatch▲351

   Domain Monitoring Made Easy

   2018

5. 5CS
   CertStream – See SSL certs as they're issued in real time▲142

   2017 · certstream.calidog.io

6. 6
   CertPost▲3

   SL monitoring that checks the certificate your server serves

   Aug 2026 · certpost.ai

7. 7
   Free Monitoring Suite by WebGazer▲338

   Monitoring for websites, APIs, and cron jobs

   2024

8. 8
   CertSonar

   SSL, domain & DNS monitoring get alerted before things break

   Mar 2026 · certsonar.com

9. 9
   Momento▲140

   A powerful platform to help you monitor your domains

   2020

10. 10
    CertWarden: SSL Expiry Tracker▲10

    Track SSL expiry before it breaks your site

    Feb 2026 · apps.apple.com

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

    2022 · haveibeenexpired.com

12. 12
    CertAvert

    Simple, free SSL certificate expiration monitoring

    Jan 2026

13. 13TC
    TLS cert expiration dashboard▲40

    2016 · github.com

14. 14
    66uptime▲98

    Self-hosted & easy to use uptime monitoring software.

    2022

15. 15CF
    CertRadar – Find every certificate ever issued for your domain▲21

    Jan 2026 · certradar.net

16. 16
    Domain Monitor: SSL & Uptime▲4

    Simple uptime monitoring for your domains, SSL, and latency.

    May 2026 · domainmonitor.samtech.solutions

17. 17
    ExpiryPing SSL Certificate Monitoring▲2

    SSL & domain expiry alerts for agencies. 5-min setup.

    Jun 2026 · expiryping.dev

18. 18
    URLWatch.io Website Monitoring tool.▲3

    Check any website up/down Status? SSL issues & more.

    27d ago · urlwatch.io

19. 19
    Domain Comet▲88

    We monitor your domains, so you don't have to.

    2020

20. 20
    Vigilmon▲3

    Free uptime monitoring + SSL expiry alerts + status pages

    Jun 2026 · vigilmon.online

21. 21
    Certly▲7

    Know before your SSL, domain, or DNS breaks

    Jul 2026 · certly.dev

22. 22
    ProSiteMonitor▲6

    Monitor your website uptime, SSL, domain — 24/7

    Nov 2025

23. 23
    SSL Certificate Checker▲11

    Check SSL certificates across public endpoints

    Jul 2026 · apify.com

24. 24
    CertChecker▲1

    Never find out an SSL cert expires too late

    23d ago · certchecker.dev

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