[hodgesrm]

Our company is the maintainer of the excellent work from hagen1778 and we've also bumped into the fee issue even with pure open source work. Grafana has gone back and forth on their policies over the last few years. At this time there do not seem to be problems with open source plugins to open source products (e.g., ClickHouse) and we don't have issues posting new releases.

One thing that does seem to have changed was that it was formerly pretty easy to see the number of downloads on Grafana plugins regardless of source. The last time I saw this data it was something like 8M downloads for the aforesaid ClickHouse plugin. I can't find it now, so it's possible Grafana has changed their policies on this. It makes it hard to judge the popularity of community plugins.