Boulder
5.8#16 in public key infrastructure softwareFree planFree planAPILinuxSelf-hosted
VisitBoulder vs Let's Encrypt
Let's Encrypt
7.6#3 in public key infrastructure softwareFree planFree planWebAPILinuxmacOS
VisitWhat both publish
| Fact | Boulder | Let's Encrypt |
|---|---|---|
| License | The project is licensed under the Mozilla Public License 2.0. | Boulder is open source under the Mozilla Public License 2.0. |
| Support | The maintainers prioritize support and development work that advances Let's Encrypt's mission and warn that timely support may not be available for other deployments. | Let’s Encrypt does not offer direct subscriber support and points users to its documentation and community support forums. |
Boulder plans
- Open sourceFree
Let's Encrypt plans
- Let's Encrypt certificatesFree
- Short-lived certificatesFree
Pick Boulder if…
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.
Pick Let's Encrypt if…
Let's Encrypt serves people and organizations worldwide who need certificates for domain-named web, mail, or FTP servers. It suits users able to manage certificates through ACME clients and consult documentation or community forums when needed.