Alternatives

Products that do what CertFleet – SSL and HTTP uptime monitoring with live TLS probes and alerts does

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

1. 1
   CertFleet▲1

   SSL + uptime monitoring without the observability bill

   23d ago

2. 2CS
   CertStream – See SSL certs as they're issued in real time▲142

   2017 · certstream.calidog.io

3. 3FC
   Free Certificate Monitoring via RSS▲120

   2024 · raphting.dev

4. 4
   SSL Alerts▲157

   Free service to send SSL certificate expiration alerts

   2018

5. 5
   CertPost▲3

   SL monitoring that checks the certificate your server serves

   Aug 2026 · certpost.ai

6. 6
   Apex Ping▲301

   Uptime & performance monitoring for websites and APIs

   2016

7. 7
   Free Monitoring Suite by WebGazer▲338

   Monitoring for websites, APIs, and cron jobs

   2024

8. 8
   CertWarden: SSL Expiry Tracker▲10

   Track SSL expiry before it breaks your site

   Feb 2026

9. 9
   SSL Certificate Checker▲11

   Check SSL certificates across public endpoints

   Jul 2026 · apify.com

10. 10
    Crawly▲234

    Uptime, performance, SSL certificate and asset monitoring.

    2018

11. 11CF
    CertRadar – Find every certificate ever issued for your domain▲21

    Jan 2026 · certradar.net

12. 12TC
    TLS cert expiration dashboard▲40

    2016 · github.com

13. 13
    PingPing▲168

    A simple tool to monitor your website and SSL

    2018

14. 14
    UptimeRobot App 2.0▲199

    Web, SSL, ports & Cron-jobs monitoring

    2021

15. 15NH
    Never have an SSL certificate expire again▲40

    2022 · haveibeenexpired.com

16. 16
    66uptime▲98

    Self-hosted & easy to use uptime monitoring software.

    2022

17. 17CT
    Certificate Transparency Log Monitor▲53

    2016 · sslmate.com

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

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

    26d ago · urlwatch.io

19. 19
    ExpiryPing SSL Certificate Monitoring▲2

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

    Jun 2026 · expiryping.dev

20. 20
    CertSonar

    SSL, domain & DNS monitoring get alerted before things break

    Mar 2026

21. 21
    Domain Monitor: SSL & Uptime▲4

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

    May 2026 · domainmonitor.samtech.solutions

22. 22KA
    Kuvasz – an open-source uptime and SSL monitoring service▲29

    A few months ago I took out my side project - an uptime & SSL monitoring service - from the drawer. I've decided to give it a new life and completely overhauled it, added a lot of new feature, and most importantly, a UI. Highlights - configurable uptime & SSL monitoring - Telegram, Slack, PagerDuty & E-mail notifications (more to come!) - fully-fledged REST API - a responsive, modern & fast UI - monitors are optionally configurable via a single YAML file, or you can choose to use either the UI or the API to maintain them - Cloud-native, distributed as amd64 and arm64 images - Only one…

    2025 · kuvasz-uptime.dev

23. 23
    Momento▲140

    A powerful platform to help you monitor your domains

    2020

24. 24
    SSL Checker Tool▲84

    Free way to identify SSL configuration issues

    2019

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