Leo Editor - Text and code editor where Outlines are first class citizen.

Kakoune - Vim inspired — Faster as in less keystrokes — Multiple selections — Orthogonal design

Jupyter - Project Jupyter exists to develop open-source software, open-standards, and services for interactive computing across dozens of programming languages. Ready to get started? Try it in your browser Install the Notebook.

CodeRunner - An advanced, highly flexible, and easy-to-use programming editor for your Mac.

PyScripter - PyScripter is a free and open-source Python Integrated Development Environment (IDE) created with...

PaizaCloud - PaizaCloud IDE is a programming platform that allows developers to do coding efficiently.