Go to https://www.opencre.org to see OpenCRE working and more explanation. OpenCRE stands for Open Common Requirement enumeration. It is an interactive content linking platform for uniting security standards and guidelines. It offers easy and robust access to relevant information when designing, developing, testing and procuring secure software.
OpenCRE consists of:
The application: a python web and cli application to access the data, running publicly at opencre.org
The catalog data: a catalog of Common Requirements (CREs)
The mapping data: links from each CRE to relevant sections in a range of standards
Tools and guidelines to contribute to the data and to run the application locally