* [Lego v5.2.0](https://github.com/go-acme/lego) – Let's Encrypt client and ACME library written in Go.

* [Boulder v0.20260602.0](https://github.com/letsencrypt/boulder) – ACME-based certificate authority implementation written in Go.

* [OpenSSL for Ruby v4.0.2](https://github.com/ruby/openssl) – Provides access to SSL/TLS and cryptographic functions based on the OpenSSL library.

* [Go Keyless v1.17.6](https://github.com/cloudflare/gokeyless) – Go implementation of Cloudflare's Keyless SSL protocol supporting multiple key storage options.