OpenCA PKI
OpenCA PKI: A traditional, self-hosted PKI suite for teams that need open-source CA management. Ranked #14 of 26 in Public Key Infrastructure Software by our editors (6.0/10); pricing: Free plan; best for established open-source traditional PKI.
At a glance
- Editor score6.0 / 10
- PricingFree plan
- Best forEstablished open-source traditional PKI
- Free planYes
- Paid fromNone
- Deployment modelOn_premises
- Founded1998
- Facts checked21 Sep 2026
Where it wins
- Covers CA management, issuance, revocation, and CRL operations
- Supports SCEP, PKCS#10, SPKAC, and configurable certificate extensions
- Integrates with OpenSSL, OpenLDAP, Apache, and PKCS#11 devices
Where it doesn't
- Self-hosted deployment requires your team to manage the infrastructure
- Some documentation content is outdated and covers OpenCA 0.9.2
- Its focus is traditional PKI rather than a broader enrollment platform
Our verdict on OpenCA PKI
OpenCA PKI is open-source certification authority software for building and managing public key infrastructures. It is designed for self-hosted, on-premises deployments and provides CA and registration workflows, certificate issuance, request handling, revocation, CRL management, and web-based CA, RA, and public interfaces. It fits organizations that want control over a traditional PKI environment across Linux, macOS, and web access.
Its strongest area is the breadth of core certificate operations. OpenCA PKI supports SCEP enrollment, PKCS#10 and SPKAC request processing, configurable certificate extensions and roles, and integration with PKCS#11 hardware tokens. The surrounding ecosystem includes OpenLDAP, OpenSSL, Apache, Apache mod_ssl, and smartcard- or HSM-related hardware configurations. That combination suits teams connecting certificate workflows to established open-source infrastructure rather than looking for a narrowly focused certificate issuance tool.
The trade-off is operational ownership. Self-hosting gives organizations control over deployment, but it also puts infrastructure administration and maintenance on the adopting team. Documentation includes guidance for OpenCA 0.9.2, and some of that content is outdated, so teams should allow time to align implementation work with the current 1.5.1 release. Choose OpenCA PKI when an open-source, traditional CA platform with hardware-token integration is the priority. Consider another option if the preferred approach depends on a managed service or a more current, guided onboarding experience.
OpenCA PKI pricing
OpenCA PKI fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Deployment model | On_premises |
| ACME support | Not verified |
| SCEP support | Yes |
| EST support | Not verified |
| HSM integration | Yes |
| Certificate profiles | Yes |
| Deployment | Self-hosted, Cloud |
| Platforms | Web, Linux, macOS |
| Support | Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 5 integrations: OpenLDAP, OpenSSL, Apache, Apache mod_ssl, PKCS#11 |
| Pricing | Free plan |
| Website | openca.org |
| Facts checked | 21 Sep 2026 |
OpenCA PKI integrations
OpenCA PKI lists 5 integrations on its own site.
- OpenLDAP
- OpenSSL
- Apache
- Apache mod_ssl
- PKCS#11
Alternatives to OpenCA PKI
- EJBCAA broad, self-hosted PKI platform with deep certificate and deployment support.9.0
- SSL.com Private Enterprise PKIManaged private PKI with broad enrollment protocols, lifecycle controls, and published plan pricing.8.5
- DigiCert Private CAA flexible private CA for enterprises managing certificates across hybrid and air-gapped environments.8.2
See all OpenCA PKI alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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