I'm looking at it myself from the other end: one of the most interesting ideas from Smalltalk, Oberon, Plan9, etc. was having text be executable as programs in a text editor. It's to a visual editor as a command line shell is to a line editor.

I've heard it called an 'integrating development environment,' a system where all the tools to use it like an IDE are there.

EDIT: OP has a blog post showing the similarities between the mentioned systems: https://www.multicores.org/blog/what-have-i-been-up-to.html