Far Manager on Windows, and Midnight Commander on Unix, work wonders for terminal-based development nowadays. Not only they allow you to have OS commands at the tips of your fingers, but also they allow you to navigate freely in the file system structure of a project while viewing/editing files with built-in or external editors.

UI/UX of those tools is pretty close to Borland IDEs, they have steep learning curve (at least 10x easier than vi/emacs).