Best OpenCA PKI Alternatives in 2026
Updated
20 platforms from public key infrastructure software ranked against OpenCA PKI on the same published basis.
- 1OpenCA PKI vs EZCA
- 2OpenCA PKI vs KeyTalk CKMS
- 4OpenCA PKI vs step-ca
- 5OpenCA PKI vs OpenXPKI
- 6OpenCA PKI vs XiPKI
- 7OpenCA PKI vs Keyfactor Platform
- 8OpenCA PKI vs Boulder
- 9OpenCA PKI vs AWS Private Certificate Authority
- 10OpenCA PKI vs Sectigo Certificate Manager
- 11OpenCA PKI vs SecureW2 Cloud NAC
- 12OpenCA PKI vs AppViewX PKIaaS
- 13OpenCA PKI vs cert-manager
- 14OpenCA PKI vs Entrust Certificate Manager
- 15OpenCA PKI vs HashiCorp Nomad
- 16OpenCA PKI vs Cloudflare Serverless Registry
- 17OpenCA PKI vs SSL.com Certificate Lifecycle Management
- 18OpenCA PKI vs DigiCert Private CA
- 19OpenCA PKI vs GlobalSign Atlas
- 20OpenCA PKI vs Smallstep ZTNA
- 21OpenCA PKI vs Microsoft Active Directory
OpenCA PKI alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | EZCA | 7.3 | No | $200/mo | Android, API, iOS, Linux, Mac, self-hosted, Web, Windows |
| 2 | KeyTalk CKMS | 7.2 | No | €5/mo | Android, iOS, Linux, Mac, self-hosted, Windows |
| 4 | step-ca | 7.2 | Free plan | Free | API, Linux, Mac, self-hosted, Windows |
| 5 | OpenXPKI | 7.1 | Free plan | Free | API, Linux, self-hosted, Web |
| 6 | XiPKI | 7.1 | Free plan | Free | API, Linux, Mac, self-hosted |
| 7 | Keyfactor Platform | 7.0 | No | — | API, self-hosted, Web |
| 8 | Boulder | 6.9 | Free plan | Free | API, Linux, self-hosted |
| 9 | AWS Private Certificate Authority | 6.8 | No | $50/mo | API, Web |
| 10 | Sectigo Certificate Manager | 6.8 | No | $20.83/mo | API, Web |
| 11 | SecureW2 Cloud NAC | 6.8 | No | — | Android, API, iOS, Linux, Mac, Web, Windows |
| 12 | AppViewX PKIaaS | 6.7 | No | — | API, self-hosted, Web |
| 13 | cert-manager | 6.6 | Free plan | Free | API, Linux, self-hosted |
| 14 | Entrust Certificate Manager | 6.6 | No | — | Android, API, iOS, Linux, self-hosted, Web |
| 15 | HashiCorp Nomad | 6.6 | No | — | API, Linux, Mac, self-hosted, Web, Windows |
| 16 | Cloudflare Serverless Registry | 6.5 | No | — | Linux, Mac, self-hosted, Windows |
| 17 | SSL.com Certificate Lifecycle Management | 6.5 | No | — | API, Web |
| 18 | DigiCert Private CA | 6.4 | No | — | API, Linux, self-hosted, Web |
| 19 | GlobalSign Atlas | 6.4 | No | — | API, Web |
| 20 | Smallstep ZTNA | 5.8 | No | — | iOS, Linux, Mac, Windows |
| 21 | Microsoft Active Directory | 5.7 | No | $33.58/mo | Windows |
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Questions about OpenCA PKI alternatives
What is the best alternative to OpenCA PKI?
EZCA, number 1 in public key infrastructure software with a score of 7.3 out of 10. The others here: KeyTalk CKMS, step-ca, OpenXPKI and 16 more.
What is the best free alternative to OpenCA PKI?
step-ca is the best-ranked alternative with a free plan. 5 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.