Through this link, you can go directly to Cube.js official website https://cube.dev.
You can take a quick glance through the description "???? Serverless Analytics Framework".also it's under the category of frameworks.
It belongs to statsbotco https://github.com/statsbotco.
The following link will take you to their page on GitHub https://github.com/statsbotco/cube.js, You can see that they have obtained 9,079 watchers.