Top 5 Certificate Lifecycle Management Software Companies With $1M–$5M Revenue (September 2026)

Seattle, Washington, United States

SecureW2 provides next-generation passwordless network security for enterprises, education, healthcare, service providers and small businesses around the globe. We offer Certificate & Managed PKI services, top-rated device onboarding software plus world-class RADIUS authentication services. SecureW2 provides everything an organization needs to secure its networks' perimeter by eliminating credential theft risk and improving user experience.

San Francisco, California, United States

Developer of certificate management platform intended to apply distributed ledger technology. The company's platform applies blockchain and offers features like sharing certificate information, realtime auditing, meeting pre-determined criteria like policy threshold requirement, expiration date, cascading dependencies and other related features, enabling clients to access their platform for certificate information, event logs, action items and alerts.

Melbourne, Florida, United States

DNSimple provides, DNS hosting and domain management automation services through a powerful API and beautiful web interface. Register domains, manage DNS, and issue SSL certificates, with clients in Ruby, Go, Elixir, Node, and more. DNS hosting service is fully compliant with all the .BANK security requirements. Whether you are a lone developer working on your next killer project, or a seasoned business looking for solid, reliable managed DNS, DNSimple has a plan for you.

Mountain View, California, United States

Vulnerability management for unmanaged & IoT Devices; firmware patching, certificate management, password enforcement, and service assurance

San Francisco, California, United States

Smallstep empowers organizations to effortlessly deploy end-to-end encryption across their infrastructure. The comprehensive platform detects and mitigates anomalies, equipping developers with a toolkit that continuously monitors everything, everywhere. Smallstep removes the gap traditional secrets create, using certificates to enable trusted communications between technology and people. Learn more about operationalizing end-to-end encryption for all your devices, workloads, and people at smallstep.com.