Heya, I made this:
and here's some links:
- play with the live version: https://azriel.im/dot_ix/
Yes no server! - GitHub repository: https://github.com/azriel91/dot_ix
The video doesn't show it, but you can tag nodes with a tag, and when you click on the tag in the tag legend, it highlights the node.
It's very much a hacked together project right now, but I thought people would find it fun.
enjoy 