Boulder
5.8#16 in public key infrastructure softwareFree planFree planAPILinuxSelf-hosted
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| Fact | Boulder | EJBCA |
|---|---|---|
| License | The project is licensed under the Mozilla Public License 2.0. | EJBCA Community is released under LGPL version 2.1 or later. |
| Purpose | Boulder is an ACME-based certificate authority written in Go and is the software that runs Let's Encrypt. | EJBCA is open-source PKI and Certificate Authority software for certificate management, registration, enrollment, and validation. |
Boulder suits developers exploring ACME certificate authority workflows or working on software aligned with Let's Encrypt's mission. Organizations considering production use should account for the implementation and security work required.
EJBCA suits teams managing PKI for internal systems, DevOps, industrial environments, IoT devices, or national eIDs. Community is for learning, testing, and prototyping; production users should consider its stated limitations and Enterprise support offering.