There is openoffice base https://help.libreoffice.org/latest/en-US/text/sdatabase/mai...

I am not going to claim it is any good, it suffers from the same problem most rapid application toolkits have, the easy stuff is easier, the hard stuff is harder. I was playing around at one point to see if it was worth using as a graphical interface to a postgres database. And... it worked. But in the end I preferred writing web applications. As much as I hate web dev it was better than the RAD jank.