OMG OData Mock Generator
https://github.com/wozjac/omg-odata-mock-generator
Generates random mock data for entities described in the OData metadata document. Based on the code from OpenUI5 Mock Server, but has more features like faker.js and relationships between data (useful for testing navigation links).
This is the backbone of my VSCode extension, which exposes its functionality in a handy way.
Please check the GitHub page for all configuration options and sample usage.