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Top 16 Shell TLS Projects
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Project mention: Installing a Let's Encrypt TLS Certificate on a Brother Printer with Certbot | news.ycombinator.com | 2026-03-27
* https://github.com/acmesh-official/acme.sh/wiki/How-to-use-A...
BIND 9 example:
* https://dan.langille.org/2020/12/19/creating-a-very-specific...
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Project mention: Testssl.sh: checks a server's service on any port for the support of TLS ciphers | news.ycombinator.com | 2026-05-03
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Since Cowboy 2.14.0 an experimental implementation of HTTP/3 (or QUIC or RFC9000) has been released. That's a pretty good news, and if stable enough, will change a lot on the web ecosystem. Unfortunately, this feature is not documented yet - because unstable - but it's not a good reason to play with it and try to understand how to configure a cowboy server with HTTP/3 and QUIC.
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curl (for API calls) → https://curl.se/windows/
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internal-contstrained-pki
Safely shareable TLS root CA for .internal networks using Name Constraints
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check_ssl_cert
A shell script (that can be used as a Nagios/Icinga plugin) to check an SSL/TLS connection.
Project mention: LetsEncrypt – Expiration Notification Service Has Ended | news.ycombinator.com | 2025-06-30> https://github.com/jgaa/openvalify
I don't begrudge people writing a tool to learn, but it should be noted that this wheel has already been invented:
* https://github.com/matteocorti/check_ssl_cert
* https://exchange.nagios.org/directory/Plugins/Security/check...
* https://github.com/narbehaj/ssl-checker
* https://github.com/Matty9191/ssl-cert-check
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https-ssl-cert-check-zabbix
Script to check validity and expiration of TLS/SSL certificate on hosts. May be used with Zabbix or standalone.
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stecCA
An easy to deploy Certificate Authority / Public Key Infrastructure using CFSSL, Lemur and Docker magic!
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go-lang-https-self-signed
Sample of a self signed certificate https server in golang. This repo demonstrates to you the best way to up your self signed cert in golang. It shows in a simple way how to generate and trust the ssl certificate and how to serve a https server in golang.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Shell TLS discussion
Shell TLS related posts
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Testssl.sh: checks a server's service on any port for the support of TLS ciphers
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LetsEncrypt – Expiration Notification Service Has Ended
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Practical /dev/TCP in the HTTPS Era
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Web Transport API for Low-Latency Data Streams
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A minimal TLS 1.2 implementation in a pure Bash script
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A minimal TLS 1.2 client implementation in a pure Bash script
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Badssl.com
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Jun 2026
Index
What are some of the best open-source TLS projects in Shell? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | acme.sh | 46,879 |
| 2 | Xray_onekey | 9,298 |
| 3 | testssl.sh | 9,083 |
| 4 | base-drafts | 1,660 |
| 5 | curl-for-win | 785 |
| 6 | internal-contstrained-pki | 552 |
| 7 | check_ssl_cert | 414 |
| 8 | bash_tls | 351 |
| 9 | https-ssl-cert-check-zabbix | 310 |
| 10 | stecCA | 152 |
| 11 | my_internal_ca | 25 |
| 12 | kamailio-tls-letsencrypt | 25 |
| 13 | go-lang-https-self-signed | 16 |
| 14 | ops-utils | 7 |
| 15 | isp | 2 |
| 16 | homelab | 0 |
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