* homer - https://github.com/bastienwirtz/homer
* heimdall - https://github.com/linuxserver/Heimdall
* dashmachine - https://github.com/rmountjoy92/DashMachine
* flame - https://github.com/pawelmalak/flame
In a slightly different vein:
* netdata - https://github.com/netdata/netdata
* cockpit - https://github.com/cockpit-project/cockpit/
And then of course there's grafana which is definitely not for the feint of heart.
There are so many page-of-bookmarks style dashboards, but if I'm being honest, none of them are all that great. Of the above, I like heimdall the best for its cleanliness and simplicity, but its hardly customizable.
I think we'd be much better served by a really well thought-out framework for self-hosted/homelab dashboards with excellent API documentation that has pluggable modules for things like authentication, data sources (e.g. docker, db, config file, service APIs), and the front end. This would allow people to easily build the dashboard with the features they want, and make it even easier for people to contribute a variety of "themes" for endless customization of how things are displayed.