Dev tools · alternatives · 2026

24 alternatives to KrakenKey

Automated TLS certificates in minutes.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1FS
   Free SSL Certificates▲27

   Free SSL certificates issued in less than a minute, for one or multiple domains, supporting wildcards and ACME with tutorials.

   2015 · sslforfree.com · its alternatives →

2. 2
   Mkcert – Valid HTTPS certificates for localhost▲839

   2019 · blog.filippo.io · its alternatives →

3. 3
   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 →

4. 4
   Acme-tiny, a tiny 200-line Let's Encrypt client▲280

   A tiny script to issue and renew TLS certs from Let's Encrypt - diafygi/acme-tiny

   2015 · github.com · its alternatives →

5. 5
   Autocert – use TLS to access internal kubernetes services from anywhere▲12

   🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH. - certificates/autocert/README.md at master · smallstep/certificates

   2019 · github.com · its alternatives →

6. 6AR
   Anchor Relay – A faster, easier way to get Let's Encrypt certificates▲80

   From the cryptic terminal commands to the innumerable ways to shoot yourself in the foot, I always struggled to use TLS certificates. I love how much easier (and cheaper) Let's Encrypt made it to get certificates, but there are still plenty of things to struggle with. That's why we built Relay: a free, browser-based tool that streamlines the ACME workflow, especially for tricky setups like homelabs. Relay acts as a secure intermediary between your ACME client and public certificate authorities like Let's Encrypt. Some ways Relay provides a better experience: - really fast, streamlined…

   2025 · anchor.dev · its alternatives →

7. 7
   ACME Let's Encrypt client – binary releases, works like 'make'▲83

   :lock: acmetool, an automatic certificate acquisition tool for ACME (Let's Encrypt) - hlandau/acmetool

   2015 · github.com · its alternatives →

8. 8
   Free Certificate Monitoring via RSS▲120

   2024 · raphting.dev · its alternatives →

9. 9
   TokenTimer▲8

   Certificate lifecycle automation without private-key custody

   Jan 2026 · tokentimer.ch · its alternatives →

10. 10
    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 →

11. 11CS
    CertStream – See SSL certs as they're issued in real time▲142

    2017 · certstream.calidog.io · its alternatives →

12. 12
    TinyCert▲237

    Free SSL certificates for your startup.

    2014 · tinycert.org · its alternatives →

13. 13
    I built a DNS resolver from scratch in Rust – no DNS libraries▲115

    I built a DNS resolver that lets me use https://frontend.numa instead of localhost:5173 — auto-generated TLS certs, WebSocket passthrough, path routing. No mkcert, no nginx, no /etc/hosts.

    Apr 2026 · github.com · its alternatives →

14. 14
    SSL Alerts▲157

    Free service to send SSL certificate expiration alerts

    2018 · alerts.httpscop.com · its alternatives →

15. 15AD
    Automatic Discovery for Let's Encrypt Certificate Monitoring▲11

    2017 · keychest.net · its alternatives →

16. 16
    CertSimple▲81

    EV SSL certificates delivered in hours, not days

    2015 · certsimple.com · its alternatives →

17. 17
    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 →

18. 18
    I made a script to generate self-signed SSL certs for local development▲107

    A bash script for generating trusted self-signed SSL certs for local development on your Mac - kingkool68/generate-ssl-certs-for-local-development

    2018 · github.com · its alternatives →

19. 19
    A Let's Encrypt Certificates Manager for Kubernetes▲14

    A Let's Encrypt certificates manager for Kubernetes - math-nao/certs

    2019 · github.com · its alternatives →

20. 20
    SSLreminder▲78

    Keep the business running, get reminded to extend your SSL

    2021 · sslreminder.pro · its alternatives →

21. 21
    Lego – A Let's Encrypt Library and CLI in Go▲93

    Let's Encrypt/ACME client and library written in Go - go-acme/lego

    2015 · github.com · its alternatives →

22. 22MW
    My Weekend Project, AutoSSL▲38

    2019 · autossl.co · its alternatives →

23. 23
    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 →

24. 24
    Single Command SSL/TLS Reverse Proxy with Autogen'd Certs (Golang)▲13

    :lock: Simple zero-config SSL reverse proxy with real autogenerated certificates (LetsEncrypt, self-signed, provided) - suyashkumar/ssl-proxy

    2018 · 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 →