[pahae]

I mentioned it in another reply, but https://perses.dev/ is probably the most promising alternative.

Besides that, if you're feeling masochistic you could use Prometheus' console templates or VictoriaMetrics' built-in dashboards.

Though these are all obviously nowhere near as feature rich and capable as Grafana and would only be able to display metrics for the single Prom/VM node they're running on. Might enough for some users.

[9dev]

How come I’ve never heard of Perses yet? A really Open Source, standardising Grafana clone to go alongside Prometheus for self-hosted deployments sounds just perfect!

[fred_]

For a hosted alternative, Dash0 also uses Perses for their dashboards.

Disclaimer: I am affiliated with them.