and you could edit text in Lisping and send it to Replete for evaluation. (The generic hooks still exist in Replete, so in theory other apps could do the same.)
I personally mainly use Replete for quick checks of things when AFK (seeing what a particular form might evaluate to, checking a docstring, etc.) In, short I've never really used Replete for any heavy development.
When Lisping existed (it is evidently no longer available), I was never really motivated to use it to develop code with Replete.