Open source acme projects
Every project in the registry tagged acme, ranked by real GitHub adoption.
Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS
Secure secret management for modern development teams
An open-source and free self-hosted SSL certificates ACME tool, automates the full-cycle of issuance, deployment, renewal, and monitoring visually. 完全开源免费的自托管 S
🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.
Automatically create and renew website certificates for free using the Let's Encrypt certificate authority.
A simple and ultrafast http reverse proxy serving multiple domain names and terminating TLS for http/1.1, 2 and 3, written in Rust
The Dogtag Certificate System is an enterprise-class Certificate Authority (CA) which supports all aspects of certificate lifecycle management, including key ar
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Frequently asked questions
How many open source acme projects are there?
This registry tracks 7 projects tagged acme, with 129,843 GitHub stars between them. The most-adopted is caddy at 78,660 stars.
Are these acme projects free to use?
Yes — 6 of the 7 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which acme project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these acme projects still maintained?
7 of the 7 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.