I built this thing called envlinks a while ago, and decided to make it a bit more public since I still find it incredibly useful. It's a very minimalistic website that displays links configured via environment variables and makes them accessible using keyboard only. I use it as a point of entry for kubernetes environments (one for stage, production, etc) to link to the various services and have a single URL for things like Gitlab environments when there are multiple services running in each.
What sets it apart from similar services is that you don't need to faff around with a database, config files, or anything but env variables, so it's very simple to set up in k8s & co. I couldn't find any other solution that was as simple as this, but if anyone knows of one, I'd love to hear about it.
Here's the source code with installation and config instructions: https://github.com/maxhollmann/envlinks
Any ideas (or PRs!) to make it more useful very welcome :)