List of the Top 3 Public Key Infrastructure (PKI) Software for Windows in 2025

Disruptions to business operations or failures in systems due to expired or invalid digital certificates can have serious consequences. You are invited to take advantage of a 30-day free trial of CertHat Tools for Microsoft Active Directory Certificate Services (AD CS), which will help you evaluate whether to proceed with a purchase. Should you decide to acquire a full CertHat license, the transition from the trial version to a live environment is simple; all that's required is entering a valid license key into the software. Moreover, there is a complimentary basic version of CertHat Tools designed for Microsoft PKI users. CertHat Essentials provides crucial support for PKI managers by assisting them in the effective oversight and administration of certificates. With its user-friendly features, CertHat Essentials not only facilitates certificate management but also plays a critical role in bolstering overall security measures within an organization. This comprehensive approach ensures that businesses can maintain operational continuity and safeguard their digital assets efficiently.

EJBCA is a robust PKI platform designed for enterprise use, capable of issuing and managing millions of digital certificates efficiently. Its popularity spans globally, as it serves large organizations across various industries, making it a trusted choice for secure digital certificate management.

SeaCat is an all-encompassing platform for cyber-security and data privacy tailored for mobile and IoT applications, empowering users to create and manage their apps free from cyber threats. Crafted by a specialized team, SeaCat encompasses a range of vital features that guarantee strong cyber-security and data privacy, ensuring a smooth deployment experience. Users can quickly elevate their security measures with SeaCat, all without the necessity for extensive custom development. This platform is designed with user experience in mind, avoiding intricate setups or procedures that could hinder progress. Incorporating cutting-edge security protocols, such as biometric authentication and hardware security modules, SeaCat stands out as a contemporary choice for developers. The platform is made up of three essential elements: the SeaCat SDK for integration into mobile or IoT applications, the SeaCat Gateway situated in the demilitarized zone (DMZ) ahead of backend servers, and the SeaCat PKI service that streamlines enrollment, access, and identity management. With SeaCat at their disposal, users can confidently safeguard their applications while concentrating on providing an exceptional user experience, knowing that their security needs are comprehensively addressed. Additionally, the platform's user-friendly design ensures that even those with limited technical knowledge can benefit from its robust protection features.