Keyfactor SignServer - 2026 Pricing, Features, Reviews & Alternatives

Keyfactor SignServer Enterprise is a server-side signing platform that centralizes and automates digital signing workflows for code, software, firmware, and documents to ensure integrity and trust. The platform addresses diverse industry requirements, from financial services and telecommunications to automotive, medical, and Internet of Things environments. It serves internal IT teams securing automation scripts and system images, application development groups integrating signing processes into continuous integration and continuous delivery pipelines, and device security engineers validating firmware and software to enforce execution of only trusted code on connected systems.

The platform provides secure key storage through integration with on-premises or cloud-based Hardware Security Modules for centralized generation and management of signing keys. It supports signature formats across common document and code types and implements time-stamping protocols to prove signature timing and maintain long-term validity. High-performance signing capabilities are delivered via application programming interface, command-line tools, or console interfaces without large file transfers. Access controls authenticate and authorize signature requests through certificate-based authentication, OAuth, basic authentication, or internet protocol address verification. Detailed, signed audit logs record every signature request, key management event, and transaction to ensure complete traceability. Scaling is achieved through clustering of instances with failover and load-balancing mechanisms for uninterrupted operations.