Head-to-head · Public Key Infrastructure Software

DigiCert Private CA vs OpenXPKI

Updated Nov 2026
Both researched from official sources
6 checks side by side

Higher score DigiCert Private CA #2 in Public Key Infrastructure Software 9.2/10 Pricing on request ✓ 5 of 5 features Visit DigiCert

OpenXPKI #6 in Public Key Infrastructure Software 8.8/10 Free plan Free plan✓ 0 of 5 features Visit OpenXPKI

DigiCert Private CA leads on 0 checks, OpenXPKI on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

Highest scoreDigiCert Private CA · 9.2/10
Free planonly OpenXPKI
Most featuresDigiCert Private CA · 5 of 5

DigiCert Private CA scores higher on our rubric for public key infrastructure software: 9.2 against 8.8 out of 10; our editors rank them #2 and #6.

DigiCert Private CA is the better fit for enterprise hybrid and air-gapped PKI. OpenXPKI is the better fit for open-source PKI with external CA support.

DigiCert Private CA fits best
Enterprise hybrid and air-gapped PKI
OpenXPKI fits best
Open-source PKI with external CA support

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Side by side

Show only differences

Feature	DigiCert Private CA 9.2/10 Visit ↗	OpenXPKI 8.8/10 Visit ↗
At a glance
Editor score	9.2	8.8
Ranking	#2 in Public Key Infrastructure Software	#6 in Public Key Infrastructure Software
Best for	Enterprise hybrid and air-gapped PKI	Open-source PKI with external CA support
Pricing model	Paid	Free
Starting price	Pricing on request	Free plan
Free plan	Not checked yet	✓ (best)
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web, Linux	Web, Linux
Support	Docs	Community, Docs
Compliance	SSO/SAML	GDPR, SSO/SAML
Integrations	5 integrations	12 integrations
Built for	Mid-market, Enterprise	Mid-market, Enterprise
Features DigiCert Private CA 5/5 · OpenXPKI 0/5
ACME support	✓ (best)	Not checked yet
SCEP support	✓ (best)	Not checked yet
EST support	✓ (best)	Not checked yet
HSM integration	✓ (best)	Not checked yet
Certificate profiles	✓ (best)	Not checked yet
Specs
Deployment model	Hybrid	Not checked yet
Our review
Pros	Supports ACME, SCEP, and EST certificate enrollment automation Integrates FIPS 140-2 Level 3 HSMs and existing PKI infrastructure Deploys in cloud, on premises, hybrid, or air-gapped environments	Automates certificate request, renewal, revocation, and enrollment workflows Supports multiple PKI realms, issuing CAs, rollover, and HSMs Connects with external CAs, identity systems, CMDB, and ITSM platforms
Cons	Subscription pricing requires contact with a DigiCert account representative Its broad CA and lifecycle configuration may exceed smaller PKI needs It is proprietary rather than open source	Enterprise Edition capabilities depend on commercially supported services Its broad PKI scope may exceed simpler certificate-management needs Administration centers on web, Linux, API, and self-hosted environments
Our verdict	DigiCert Private CA is a private certificate authority service for organizations securing internal users, devices, applications, servers, and digital assets. It supports private PKI across DigiCert-hosted cloud environments and… Read the review →	OpenXPKI is open-source PKI and trustcenter software for managing X.509v3 certificates. It is aimed at organizations that need structured certificate lifecycle management, automated enrollment, certificate-status alerting, and control over… Read the review →

DigiCert Private CAPublic Key Infrastructure Software 9.2Pricing on request
O OpenXPKIPublic Key Infrastructure Software 8.8Free plan

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Strengths and trade-offs

DigiCert Private CA — where it wins
- Supports ACME, SCEP, and EST certificate enrollment automation
- Integrates FIPS 140-2 Level 3 HSMs and existing PKI infrastructure
- Deploys in cloud, on premises, hybrid, or air-gapped environments
Where it doesn't
- Subscription pricing requires contact with a DigiCert account representative
- Its broad CA and lifecycle configuration may exceed smaller PKI needs
- It is proprietary rather than open source
OpenXPKI — where it wins
- Automates certificate request, renewal, revocation, and enrollment workflows
- Supports multiple PKI realms, issuing CAs, rollover, and HSMs
- Connects with external CAs, identity systems, CMDB, and ITSM platforms
Where it doesn't
- Enterprise Edition capabilities depend on commercially supported services
- Its broad PKI scope may exceed simpler certificate-management needs
- Administration centers on web, Linux, API, and self-hosted environments

DigiCert Private CA9.2/10 · Pricing on request
A flexible private CA for enterprises managing certificates across hybrid and air-gapped environments.
Visit DigiCert Full verdict →
OpenXPKI8.8/10 · Free plan
A broad open-source PKI platform for teams managing certificates, CAs, and enrollment workflows.
Visit OpenXPKI Full verdict →

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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

Last updated 14 Nov 2026 · How we research and update