Yup, TeslaFi
Ha, using both - just stood up my TeslaMate server and imported my TeslaFi info last week.. Running them concurrently. Other than a few missed drives in TeslaMate (still getting the Tasker task right), it's pretty damn good.
Considering you have full customization over it (or, you can use the built-in dashboards and charts) it's amazing. I haven't built up my own Grafana chart yet in there, as everything it comes with is really great. It's also trivial to get up and running following the installation documents (although, there are caveats, for example, when using CloudFlare and their own certs)