xca - X Certificate and Key management Alternatives

KeyStore Explorer is an open source, intuitive GUI replacement for the Java command-line utilities keytool and jarsigner. KeyStore Explorer supports creating, managing and examining keystores, keys, certificates, certificate requests, certificate revocation lists and more.

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.

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.

A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.

TinyCA is a simple graphical userinterface written in Perl/Gtk to manage a small CA (Certification Authority). TinyCA works as a frontend for openssl

gnoMint is an X.509 Certification Authority management tool ; an easy CA managing tool for graphical and command line environments. //

Enterprise Java Beans Certificate Authority, or EJBCA, is a free software public key infrastructure (PKI) certificate authority software package.

OpenXPKI is a software stack that provides all necessary components to manage keys and certificates primarily based on the X509v3 cryptography standard.

CertHat is solution for managing and monitoring digital certificates from Microsoft AD CS but also mother/external PKI sources.

Look no further if you are you looking for a simple way to mass produce certificates.

The AppViewX CERT+ platform provides users with a full-cycle certificate management suite, enabling 360-degree control and visibility into network infrastructures.

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.