List of the Top 14 Public Key Infrastructure (PKI) Software for Freelancers in 2025

Boost the return on investment for the current PIV infrastructure in cross-agency encryption by implementing ZevaCrypt™, a thorough and user-friendly end-to-end encryption solution. Email communication, especially over secure channels, has long presented critical security issues, particularly for individuals responsible for ensuring the enforcement of high assurance credentials like PIV and CAC. As email remains the predominant means of exchanging both sensitive and non-sensitive information, the necessity for secure communication cannot be emphasized enough. Although encrypting emails within a single organization is relatively easy, achieving a seamless encryption process across multiple organizations is far more complex and frequently necessitates manual effort. Current PKI encryption systems often do not meet the required security standards, as they typically fail to validate certificate policies as intended. It is important to recognize that effective encryption must combine strong identity verification with sophisticated cryptographic methods. In this regard, PKI encryption stands out as the only viable approach that can achieve this vital integration of objectives, thereby ensuring that sensitive communications are adequately protected across different agencies. Ultimately, leveraging ZevaCrypt™ can streamline this process and enhance overall security measures.

Google Cloud's Certificate Authority Service offers a powerful solution that emphasizes high availability and scalability, enabling you to efficiently manage and secure private certificate authorities (CAs) while simplifying and automating the entire process. With this cloud-based service, you can enhance the deployment and management of your enterprise public key infrastructure (PKI), effectively reducing the time spent on labor-intensive and error-prone tasks, allowing you to redirect efforts toward more strategic objectives. It provides the ability to customize the Certificate Authority Service to meet your unique needs by establishing tailored CAs and certificates, enforcing specific access controls, automating routine processes through APIs, and easily integrating with existing systems. You can be confident in the service's reliability, which includes high availability and scalability backed by a service level agreement (SLA), along with audit capabilities designed to help you achieve compliance with advanced security standards. Furthermore, setting up a private CA can be accomplished in just minutes, significantly shortening the setup duration compared to the traditional methods, which often take days or weeks to implement and manage. This remarkable efficiency not only accelerates your operational processes but also significantly bolsters your organization's overall security framework, making it an invaluable resource for any enterprise. Ultimately, leveraging this service positions your organization to adapt swiftly to evolving security challenges while maintaining a robust governance framework.

4identity, developed by Bit4id, is a cutting-edge solution aimed at enhancing web applications through Digital Signature and Authentication functionalities. This platform removes the necessity for Java Applets or external plugins, providing a smooth user experience that is compatible with any web browser and seamlessly functions across major operating systems. Its “integration-less” Engine allows developers to effortlessly integrate Digital Signature and Strong Authentication into their web applications using a simple API. The platform's user-friendliness is further underscored by its “1-click signing” feature, which streamlines the signing process for end-users. Bit4id has extensive experience in developing software and tools centered around security and digital identity management, harnessing the capabilities of Public Key Infrastructure (PKI). With a management portfolio that includes over 10 million digital identities and the annual processing of more than 50 million digital signatures, the company positions itself as a leader in the PKI and digital identity space across Europe and Latin America. Furthermore, with a strong commitment to innovation and user-centric solutions, Bit4id is poised to further influence the landscape of digital identity management in the coming years.

Discover the advanced security capabilities of CloudRAID, a solution that has received multiple accolades for its resilient and user-friendly file sharing features, whether hosted on-premise or in our secure data centers. Our system utilizes zero-knowledge storage and strong email protection, ensuring that recipients can access files without the need for software installation, which facilitates smooth communication. The email encryption gateway based on CloudRAID offers high levels of resilience and user-friendliness, eliminating the need for maintenance or PKI, while fully supporting all email clients and devices. In just a matter of minutes, you can deploy this protective measure, thanks to integrated tools that help identify vulnerabilities and enhance vital infrastructures. Collaboratively developed with the German Federal Office for Information Security (BSI), our technology employs techniques such as fragmentation, encryption, and redundant distribution to drastically reduce your attack surface. With DocRAID® at the forefront of CloudRAID technology, your files are secured both during transit and at rest, bolstered by the distribution of encrypted data fragments across various jurisdictions for added protection. Furthermore, our pioneering strategy guarantees that your sensitive data remains uncompromised even amidst the rapidly changing digital landscape, allowing you to focus on your core operations with peace of mind.

Elevate your mobile security with a solution designed just for you. Nexsign represents the next generation of mobile security, providing a substantial improvement over conventional passwords that can be easily forgotten or duplicated. By leveraging biometric information from your fingerprint, face, and voice, Nexsign™ guarantees that your identity is verified in a manner that is not only more intuitive and faster but also significantly more secure. Wave goodbye to the inconvenience of remembering complex passwords, as accessing your data can now be as effortless as a quick biometric scan. Rest assured, Nexsign™ is committed to your privacy, as it does not store your biometric data on its servers, and its strong Public-Key Infrastructure (PKI) minimizes the risk of any data breaches. Biometric authentication is just the beginning; Nexsign™ is adaptable and works seamlessly across a range of platforms, enhancing its capabilities with Mobile OTP and PIN authentication. The integration of these cutting-edge solutions has been made remarkably easy, thanks to standardized development toolkits, APIs, and a user-friendly web-based administration portal that streamline the process even further. With Nexsign™, achieving mobile security has never been more straightforward and customized to your needs, ensuring that you can manage your security effortlessly. Additionally, as technology evolves, Nexsign™ is poised to adapt, continually offering innovative features that enhance user experience and security alike.

AVX ONE offers a cutting-edge SaaS platform tailored for managing certificate lifecycles effectively. It caters to the requirements of enterprise PKI, IAM and security professionals, as well as DevOps, cloud, platform, and application teams. With AVX ONE, users gain enhanced visibility, automation, and control over their certificates and keys, facilitating agile responses to cryptographic changes and potential threats. This capability helps mitigate the risk of outages and ensures preparedness for the era of Post-Quantum Cryptography. Additionally, AppViewX serves as a comprehensive platform that delivers immediate benefits through organization-wide certificate lifecycle management and automation for Kubernetes/container TLS, while also providing scalable PKI-as-a-Service, seamless Microsoft PKI Modernization, secure code-signing, IoT Identity Security, SSH Management, and readiness for Post-Quantum Cryptography advancements. By leveraging these features, businesses can enhance their security posture and streamline their certificate management processes effectively.

Robust digital security is achievable through the most reliable on-premises identity and access management (IAM) solutions available today. The Identity Enterprise platform offers an integrated IAM system that caters to a diverse array of consumer, employee, and citizen scenarios. It excels in managing high-assurance applications that necessitate a zero-trust model for potentially millions of users. The platform is versatile, allowing for deployment both on-premises and through virtual appliances. The principle of "never trust, always verify" ensures that both your organization and its user communities remain secure, regardless of their location. High-assurance applications include features like credential-based access, issuance of smart cards, and top-tier multi-factor authentication (MFA), safeguarding your workforce, consumers, and citizens alike. Additionally, user experience can be enhanced through adaptive risk-based authentication and passwordless login options. Digital certificates (PKI) can be employed to elevate security, offering robust protection whether utilizing a physical smart card or a virtual counterpart, thereby reinforcing the integrity of your identity management strategy. This comprehensive approach ensures that security remains a priority while minimizing potential obstacles for users.

Effectively oversee the complete lifecycle of certificates within your network, applicable to both on-premise and cloud-centric Public Key Infrastructure (PKI) environments. Transition effortlessly from your existing certificate authority by adopting policy-driven automated mechanisms for the issuance, renewal, and revocation of certificates, which eliminates the potential for human error often associated with manual tasks. As organizations increasingly rely on PKI to protect machines, devices, and user access through keys and digital certificates, HID IdenTrust, in partnership with Keyfactor, delivers an efficient solution for PKI and extensive automation in certificate lifecycle management. HID IdenTrust provides a cloud-managed PKI service capable of issuing public, private, and U.S. Government interoperable (FBCA) digital certificates, significantly enhancing the security of websites, network infrastructures, IoT devices, and employee identities. Additionally, you can identify all certificates present within both network and cloud environments through real-time inventories of public and private Certificate Authorities (CAs), as well as utilizing distributed SSL/TLS discovery tools and direct connections to key and certificate repositories, ensuring thorough visibility and oversight. This comprehensive strategy not only fortifies security but also enhances operational effectiveness throughout the organization, ultimately leading to a more resilient digital ecosystem.

KeyTalk functions autonomously from Certificate Authorities while maintaining connections to various public CAs, such as GMO GlobalSign and Digicert QuoVadis. Switching between different CAs is a seamless and efficient process, even when overseeing thousands of certificates and endpoints, which alleviates worries about being tied to a single vendor. Moreover, KeyTalk includes a built-in CA that facilitates the creation of private certificates and keys. Have you ever found yourself relying on expensive public certificates for your internal applications or dealing with the restrictions of Microsoft CS and other private CAs? If this resonates with you, the advantages of our internal CA and private PKI certificate issuance will surely be beneficial. KeyTalk automates the entire lifecycle management of your certificates, providing you with a thorough and up-to-date overview of all your certificates, including information like certificate names, SANs, and their validity periods. In addition, it offers insights into the cryptographic keys and algorithms used for both internal and external certificates, significantly improving your overall security management. With these robust functionalities, KeyTalk effectively simplifies and enhances your entire certificate management workflow, allowing you to focus more on your core business.

Effortlessly manage, control, and protect every connected device from a unified platform, regardless of where they are in their lifecycle. As new connection methods emerge daily, it is projected that by 2025, the number of online devices could reach a staggering 75 billion. The challenge of securing such a diverse range of devices, each with unique manufacturing processes, electronics, software, functionality, and lifecycles, demands a solution that is highly versatile, scalable, and dependable. DigiCert IoT Device Manager is specifically designed to adapt to the rapidly changing IoT landscape, making the management of your devices seamless, irrespective of their design, purpose, or the quantity deployed worldwide. Leveraging cutting-edge PKI technology, the IoT Device Manager caters to the needs of even the most intricate IoT configurations. From the initial silicon injection to the final decommissioning stage, whether managing the manufacturing process, operational deployment, or addressing individual remediation versus the simultaneous issuance of millions of certificates, this tool provides a simple and scalable solution tailored to diverse requirements. This comprehensive strategy not only bolsters security but also simplifies device management across multiple environments and applications, enhancing operational efficiency in the process. By integrating such a robust system, organizations can ensure their devices remain secure throughout their entire lifecycle.

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.

Organizations today have access to a diverse array of exceptional enterprise security tools. These tools can be deployed either on-premises or as cloud-based services, with some solutions offering a blend of both methods. The main challenge that companies face is not the lack of available tools or solutions, but the struggle to achieve smooth integration of privileged access management systems within a cohesive platform for monitoring and auditing. GaraSign offers a robust solution that allows organizations to securely and efficiently connect their security systems without disrupting their existing workflows. By pinpointing and highlighting shared characteristics, GaraSign helps streamline and consolidate the supervision of essential enterprise functions, including privileged access management (PAM), privileged identity management, secure software development, code signing, data protection, PKI & HSM solutions, DevSecOps, and more. As a result, it becomes crucial for security leaders in organizations to prioritize data security management, PAM, and privileged identity management in their strategic planning. Furthermore, the capacity to integrate these diverse tools not only enhances operational efficiency but also strengthens risk management practices across the organization. This integration ultimately fosters a more resilient security posture, enabling businesses to navigate the complexities of today's threat landscape with greater confidence.

Developing a thorough authentication approach that diligently verifies users, devices, and interactions via a dynamic cloud-based platform is essential for modern organizations. Axiad facilitates the shift towards a passwordless setup, significantly reducing the risks and complications linked to fragmented solutions while simultaneously reinforcing cybersecurity measures and enhancing user empowerment. By instituting strong security measures, dismantling information barriers, and maintaining compliance with regulatory standards, companies can leverage enterprise-grade passwordless multi-factor authentication (MFA). In addition, businesses can integrate government-level, phishing-resistant authentication methods to fortify their security structures. Transitioning from traditional identity and access management systems to implementing optimal practices for user protection and compliance through cutting-edge passwordless and phishing-resistant MFA strategies is crucial. Moreover, it is vital to enhance machine identity verification along with overall security by employing a cohesive and versatile Public Key Infrastructure (PKI) framework, which ensures that organizations are prepared to tackle the continuously evolving landscape of cyber threats. Ultimately, embracing these innovative solutions not only secures sensitive information but also fosters a culture of safety and trust within the organization.

Digital certificates are essential for establishing trust between entities that communicate over the Internet and within private networks. Their importance is growing, especially regarding the security of IoT applications that rely on wireless sensor networks and interconnected smart devices, as each device introduces a potential point of vulnerability. Addressing this increasing number of vulnerabilities is vital when developing a robust security strategy. For many organizations, managing certificates through an internal Public Key Infrastructure (PKI) can be both time-consuming and expensive. To ease this challenge, Certicom offers a reliable and secure hosted PKI solution that efficiently manages certificate oversight for both individual organizations and entire ecosystems. By leveraging this service, organizations can significantly lower startup costs and ongoing expenses related to certificate management while simultaneously bolstering device security and speeding up the time to market for their products. This strategic move allows companies to concentrate more on fostering innovation, rather than becoming overwhelmed by the complexities of certificate management, thus fostering a more agile and forward-thinking operational environment.