Xibo - Digital Signage for Everyone!
OpenXPKI - OpenXPKI is a software stack that provides all necessary components to manage keys and certificates...
Yodeck - Yodeck enables you to design and schedule your digital signage on Raspberry Pi easily from the web, using your computer, tablet or smartphone.
Dogtag PKI - The Dogtag Certificate System is an enterprise-class open source Certificate Authority (CA).
LibreSignage - An open source digital signage solution
Vault by HashiCorp - Tool for managing secrets