No. 3 of 25 ·Public Key Infrastructure Software

XiPKI

Mac · Linux · Self-hosted · API

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

XiPKI is ranked #3 of 25 in public key infrastructure software on Freedom251. It runs on API, Linux, macOS, Self-hosted. There is a free plan.

XiPKI plans and pricing

All plans

Apache License 2.0 Free Open-source software under Apache Software License, Version 2.0 github.com · 4 Oct 2026

Compared on public key infrastructure software

Deployment model: on_premises
ACME support: Yes
SCEP support: Yes
EST support: Yes
HSM integration: Yes
Certificate profiles: Yes

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The record

Purpose: XiPKI is an open-source public key infrastructure system covering certification authority, registration authority, and OCSP responder functions, intended for critical infrastructure.
Post-quantum cryptography: The project describes native support for ML-DSA, ML-KEM, and composite post-quantum algorithms.
Certificate protocols: Its CA protocol gateway supports EST, SCEP, CMP, ACME, and XiPKI's own RESTful API.
HSM integrations: It supports HSM integration through PKCS#11 and lists AWS CloudHSM, Nitrokey, nCipher, Sansec, SoftHSM, TASS, Thales, and Utimaco devices.
Operating requirements: The project lists Linux and macOS, Java 11 or later, and Tomcat 10 or 11 as supported platform requirements.
Database support: Supported databases listed are DB2, MariaDB, MySQL, Oracle, PostgreSQL, H2, and HSQLDB.
CA management: XiPKI supports multiple CAs in one software instance, database clusters, active instances for the same CA, and CA management through embedded OSGi commands and an API.
OCSP: The OCSP responder supports RFC 2560 and RFC 6960, the lightweight high-volume profile in RFC 5019, signed and unsigned requests, health checks, and several certificate status sources including EJBCA databases.
Security and compliance: The project says Bouncy Castle can be switched between LTS and FIPS variants to meet different compliance requirements, and lists eIDAS standards EN 319 411 and EN 319 412 support.
Downloads: The setup archive can be downloaded from GitHub Releases or Maven Central, or built from source.
Support: The project directs users to open a GitHub issue and asks bug reports to include test data, logs, version, OS, JRE or JDK, and reproduction steps.
Latest release: The releases page lists v6.7.1 as the latest release, dated 2026/09/07.
Maker: The GitHub account identifies the project author as Lijun Liao, PhD, and lists Germany as the location.
Price from: Free

Where it ranks on Freedom251

Best Public Key Infrastructure Software in 2026#3 of 25

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Sources

github.com/xipki/xipki· checked 4 Oct 2026
github.com/xipki/xipki/releases· checked 4 Oct 2026
github.com/xipki· checked 4 Oct 2026