We are using DataGrip and DBeaver to develop any non trivial SQL and investigations.
Metabase we use for building dashboards, and we taught non technical people to use it so they can answer ~70% of questions they have about the data themselves.
As an added question does any of those free systems support crossfiltering or drill down? Tested them and they seem severely lacking in basic 2020 features their big costly brothers got years years ago.
Not the GP, but while the UI leaves something to be desired (it’s Eclipse-based), I’ve found it’s a very productive tool once you figure things out. ER diagrams, graphical ways to update data, extensive ways to export/import data, DB metrics dashboards, lots of useful tools and features.