I don't know for Delphi, but for FPC, FreeVision: it's what is used to build the text-mode IDE. Or you could try looking for adapted copies of Turbopower's Object Professional (there were some for Virtual Pascal).
RAD tools for that, though, are so scarce in the ground so as to be inexistent. Much more so since the big DOS ftp repositories (Simtel, Garbo, etc.) started dissapearing.