OpenXPKI is described as 'Software stack that provides all necessary components to manage keys and certificates primarily based on the X509v3 cryptography standard' and is an app. There are nine alternatives to OpenXPKI for a variety of platforms, including Windows, Linux, Web-based, Self-Hosted and Mac apps. The best OpenXPKI alternative is xca - X Certificate and Key management, which is both free and Open Source. Other great apps like OpenXPKI are Verisign, Dogtag Certificate System, CertHat - Tools for Microsoft PKI and Pkcs11Admin.
X Certificate and Key management is an interface for managing asymetric keys like RSA or DSA. It is intended as a small CA for creation and signing certificates. It uses the OpenSSL library for the cryptographic operations.
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Verisign’s critical yet mostly invisible role – helping to maintain the security, stability and resiliency of the Domain Name System (DNS) and the internet – can sometimes be overshadowed by more visible aspects of the domain name business.
The Dogtag Certificate System is an enterprise-class open source Certificate Authority (CA). It supports all aspects of certificate lifecycle management, including key archival, OCSP and smartcard management, and much more.
CertHat is solution for managing and monitoring digital certificates from Microsoft AD CS but also mother/external PKI sources.
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Pkcs11Admin is an open-source GUI tool for administration of PKCS#11 enabled devices (smartcards, HSMs etc.) which runs under .NET 4.5 on MS Windows and under Mono 3.X on Linux and Mac OS X.
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A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.
Enterprise Java Beans Certificate Authority, or EJBCA, is a free software public key infrastructure (PKI) certificate authority software package.
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The AppViewX CERT+ platform provides users with a full-cycle certificate management suite, enabling 360-degree control and visibility into network infrastructures.
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