I have the same fear of Oracle and installed LibreOffice (stooopid name). On the surface, it seemed OK, but I couldn't make lookups (dropdowns) work. I always got an error (504, I think). It may be based on the same code, but it *is* still beta, so be careful. The install is a mess as well. I put it on my Fedora laptop and when I first ran it nothing would run. The command line was incorrect - trivial but annoying.