No. 11 of 25 ·Public Key Infrastructure Software

OpenCA PKI

Web · Mac · Linux · Self-hosted

Freedom report

Two barsScore 5.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely3 of 6 device platforms
DocumentedThinly documented

OpenCA PKI is ranked #11 of 25 in public key infrastructure software on Freedom251. It runs on Linux, macOS, Self-hosted, Web. There is a free plan.

OpenCA PKI plans and pricing

All plans

OpenCA PKI Free Open source PKI management software · Version 1.5.1 listed openca.org · 4 Oct 2026

Compared on public key infrastructure software

Free plan: Yes
Deployment model: on_premises
SCEP support: Yes
HSM integration: Yes
Certificate profiles: Yes

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The record

Purpose: OpenCA PKI is an open source, out-of-the-box Certification Authority for setting up and managing a PKI.
Protocols and cryptography: The project says it implements commonly used protocols with full-strength cryptography.
Current listed release: The download page lists OpenCA PKI (SpecialK) version 1.5.1.
Platforms: Version 1.5.1 download links are provided for Linux, Solaris, and MacOS X.
Dependencies: The project names OpenLDAP, OpenSSL, Apache, and Apache mod_ssl among the required software.
Tools prerequisite: OpenCA Tools version 1.3.0 is listed as a prerequisite that should be installed before OpenCA PKI.
Security reporting: The project accepts private vulnerability reports by email and public reports through its OpenCA and OpenCA-Tools issue trackers.
Support: The project describes community support through mailing lists, forums, and online chat, and mentions paid support from independent third parties.
Documentation limits: The documentation page says downloadable documentation is unavailable and that the OpenCA Guide for version 0.9.2 is outdated in some parts.
Older feature note: A 2008 release announcement lists Elliptic Curve support, automatic certificate and CRL issuance through online engines, and a graphical installer for binary distributions.
Project model: OpenCA Labs says its projects are volunteer-driven and use a collaborative, consensus-based management process.
Maker locations: The support page lists OpenCA Project offices in Modena, Italy, and New York, USA.
Founded: 1998
Price from: Free

Where it ranks on Freedom251

Best Public Key Infrastructure Software in 2026#11 of 25

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Sources

openca.org/projects/openca/· checked 4 Oct 2026
openca.org/projects/openca/downloads.shtml· checked 4 Oct 2026
openca.org/support.shtml· checked 4 Oct 2026
openca.org/projects/openca/docs.shtml· checked 4 Oct 2026
openca.org/about.shtml· checked 4 Oct 2026
openca.org· checked 28 Sept 2026