Dev tools · alternatives · 2026

24 alternatives to CertPost

SL monitoring that checks the certificate your server serves

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.

1. 1
   Free Certificate Monitoring via RSS▲120

   2024 · raphting.dev · its alternatives →

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

   2017 · certstream.calidog.io · its alternatives →

3. 3
   haveibeenexpired▲68

   No more expired SSL certificates

   2021 · haveibeenexpired.com · its alternatives →

4. 4
   Monitorly▲76

   Get real-time alerts for your SSL expiry

   2022 · its alternatives →

5. 5
   Certificate Transparency Log Monitor▲53

   2016 · sslmate.com · its alternatives →

6. 6
   SimpleOps▲297

   Keep your websites up and never lose customers

   2020 · simpleops.io · its alternatives →

7. 7
   SSL Alerts▲157

   Free service to send SSL certificate expiration alerts

   2018 · alerts.httpscop.com · its alternatives →

8. 8
   SSL Monitoring Solution▲6

   Monitor SSL certs and avoid unexpected downtime

   2025 · its alternatives →

9. 9
   CertFleet▲1

   SSL + uptime monitoring without the observability bill

   Aug 2026 · its alternatives →

10. 10
    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

    Aug 2026 · certfleet.net · its alternatives →

11. 11
    SSLreminder▲78

    Keep the business running, get reminded to extend your SSL

    2021 · sslreminder.pro · its alternatives →

12. 12
    Notify.domainsfree tier, from $2/mo▲322

    Know the moment a domain opportunity appears

    Aug 2026 · notify.domains · its alternatives →

13. 13
    Kit.domains▲198

    Hello Hacker News community, We are excited to announce the launch of KIT.DOMAINS, our new tool designed to simplify the management and monitoring of domains. KIT DOMAINS is a convenient and reliable solution for tracking the status of your domains and SSL certificates. With KIT DOMAINS, you will receive timely notifications about expirations and emerging issues, ensuring your sites remain operational and secure. Key features: - Expiration Tracking: Monitor the expiration dates of your domains to prevent accidental lapses. - SSL Certificate Monitoring: Keep your SSL certificates up-to-date…

    2024 · kit.domains · its alternatives →

14. 14
    CertAvert – Free SSL/TLS tools and certificate expiry alerts▲3

    Simple, free SSL certificate expiration monitoring

    7h ago · certavert.com · its alternatives →

15. 15
    SSL Certificate Checker▲11

    Check SSL certificates across public endpoints

    Jul 2026 · apify.com · its alternatives →

16. 16
    Observe Domains▲78

    Monitor domain settings, SSL certificates, expiration dates

    2022 · observe.domains · its alternatives →

17. 17
    Never have an SSL certificate expire again▲40

    Automated SSL certificate monitoring with expiration alerts, Certificate Transparency discovery, and Slack/Discord/Teams notifications. Prevent downtime with continuous monitoring.

    2022 · haveibeenexpired.com · its alternatives →

18. 18
    StatusPing▲78

    Monitor everything about your website

    2021 · its alternatives →

19. 19
    CertWarden: SSL Expiry Tracker▲10

    Track SSL expiry before it breaks your site

    Feb 2026 · apps.apple.com · its alternatives →

20. 20
    Nodeify▲72

    Website SSL certificate monitoring

    2020 · its alternatives →

21. 21AD
    Automatic Discovery for Let's Encrypt Certificate Monitoring▲11

    2017 · keychest.net · its alternatives →

22. 22
    TLS cert expiration dashboard▲40

    A dashboard written in JavaScript & HTML to check the remaining time before a TLS certificate expires. - cmrunton/tls-dashboard

    2016 · github.com · its alternatives →

23. 23
    Monitoria▲5

    Free uptime and SSL monitoring for your website.

    2020 · monitoria.ca · its alternatives →

24. 24
    StaySecure▲3

    Free SSL Certificates Expiration Monitoring Tool

    2019 · staysecure.io · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →