I wonder if anyone has come up with a TurboC-like UI "theme" for, e.g. Emacs. Freepascal uses a Turbo-like UI by default and a free reimplementation known as RHIDE is already (IIRC) part of the FreeDOS distribution, so recreating the UI itself shouldn't be too hard. It might be a fun way to boost adoption of these terminal-based tools, since the ergonomics and UX is in fact quite reminiscent of modern IDE's.
That's a nice start, but it lacks some of the most distinctive features. Even being limited to a single full-view buffer is not very Turbo-like. And I'm not seeing much IDE-like integration.