A problem I've run into with GitLab is that it's quite annoying to view the variables of multiple projects and environments in one place. Projects inherit the variables of their parents, which means that getting a view of which variables apply to a particular project in an environment requires spelunking around the UI and working it out.

I figured I'd build my own UI to solve that, so I did. It's here: https://geevee.netlify.app/.

A benefit it has over a native GitLab UI is that it downloads and caches the project/group hierarchy in local storage (it's entirely client side), and can be refreshed on demand. It groups variables by environment mask and gives you a view of the entire variable hierarchy for a project.

Maybe some others might find it useful :)