Dev tools · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Tool for debugging client TLS version and cipher support issues launched in 2021; newer entries below may have overtaken it.

1. 1SD
   SSL Decoder – An open-source alternative for the SSL Labs server test▲160

   2015 · tls.so · its alternatives →

2. 2
   Free Certificate Monitoring via RSS▲120

   2024 · raphting.dev · its alternatives →

3. 3
   lcl.host▲308

   Get HTTPS in your local dev environment

   2024 · lcl.host · its alternatives →

4. 4
   SSL Checker Tool▲84

   Free way to identify SSL configuration issues

   2019 · magenticians.com · its alternatives →

5. 5
   Free Monitoring Suite by WebGazer▲338

   Monitoring for websites, APIs, and cron jobs

   2024 · webgazer.io · its alternatives →

6. 6
   SSLreminder▲78

   Keep the business running, get reminded to extend your SSL

   2021 · sslreminder.pro · its alternatives →

7. 7CI
   Check if your browser is vulnerable to the Apple SSL bug▲118

   2014 · gotofail.com · its alternatives →

8. 8
   Caddy, a cross-platform HTTP/2 web server▲208

   Caddy is a powerful, enterprise-ready, open source web server with automatic HTTPS written in Go

   2015 · caddyserver.com · its alternatives →

9. 9
   Simple monitoring service▲95

   Tools for people who ship. T3 Code, T3 Chat, and more.

   2014 · ping.gg · its alternatives →

10. 10CS
    CertStream – See SSL certs as they're issued in real time▲142

    2017 · certstream.calidog.io · its alternatives →

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

    Free tools for SSL/TLS certificate transparency search, configuration analysis, and security monitoring.

    Jan 2026 · certradar.net · its alternatives →

12. 12GC
    GetHTTPSforFree.com, a no-install browers-based Let's Encrypt client▲18

    2015 · gethttpsforfree.com · its alternatives →

13. 13AT
    A tool for creating custom TLS CA bundles▲20

    2014 · mkcert.org · its alternatives →

14. 14
    SSL Montior▲77

    Free SSL monitoring app for macOS

    2023 · its alternatives →

15. 15MW
    My Weekend Project, AutoSSL▲38

    2019 · autossl.co · its alternatives →

16. 16SS
    Simple SSL Scanner▲31

    Expedited Security provides straightforward security services for Heroku, AWS and Google Cloud

    2014 · expeditedssl.com · its alternatives →

17. 17
    SSL Certificate Checker▲11

    Check SSL certificates across public endpoints

    Jul 2026 · apify.com · its alternatives →

18. 18
    My LetsEncrypt Managemet Console/API Server (Open-Source)▲15

    2016 · github.com · its alternatives →

19. 19
    SSL Scanner & SSL Vulnerability Scanner▲4

    Alternative to Qualys SSL scan

    Jun 2026 · securitywall.co · its alternatives →

20. 20
    SSL certificate dashboard▲45

    Dashboard for ssl certificates. Contribute to FalkoJoseph/certificate-dashboard development by creating an account on GitHub.

    2016 · github.com · its alternatives →

21. 21
    CertMagic – Caddy's automagic HTTPS features as a Go library▲33

    Automatic HTTPS for any Go program: fully-managed TLS certificate issuance and renewal - caddyserver/certmagic

    2018 · github.com · its alternatives →

22. 22
    ISP.Tools▲15

    Instant global network diagnostics for ISPs and engineers.

    Nov 2025 · isp.tools · its alternatives →

23. 23AD
    Automatic Discovery for Let's Encrypt Certificate Monitoring▲11

    2017 · keychest.net · its alternatives →

24. 24
    Pyrtls, rustls-based modern TLS for Python▲22

    rustls-based modern TLS for Python. Contribute to djc/pyrtls development by creating an account on GitHub.

    2024 · github.com · 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 →