* [eggsampler/acme v3.8.0](https://github.com/eggsampler/acme) – Go client library implementing RFC8555 (ACME v2) for interacting with ACME certificate authorities.

* [ACMEz v3.1.6](https://github.com/mholt/acmez) – Fully RFC 8555-compliant ACME client library in Go with robust retries, flexible solvers, and enterprise-grade API.