Haven't used their IDEs for some time, but I really like DataGrip. While someone always knows of an open source alternative, it's the best full-featured cross-database tool I've found.
I really liked HeidiSQL when I was working on Windows, but after switching to Linux I struggled to find anything with similar UI and workflow. DataGrip was a really nice discovery, though I still haven't gotten fully comfortable with the UI, it's quite a bit more complex.