Borland also dabbled for a while with a Mac version and later with a Linux version. Both were never succesful but I expect they put a lot of resources in there.

Borland also dabbled for a while with a Mac version and later with a Linux version. Both were never succesful but I expect they put a lot of resources in there. Edit: it is funny that Lazarus is cross platform, while Delphi still only runs on Windows (although it can compile to other platforms).