What free and commercial tools for Wolfram Language development do you know? A while back I did a review of free tools for developing in the Wolfram Language (you can read my review with the help of a translator here). But time goes by, the number of tools and technologies grows, and my review doesn't get any more hits. So I thought I should do a similar review, but first in English, second on the most popular and useful resource on Wolfram Language, and third in a format where I can easily add new tools to my review without editing the whole page/article.
I think this would be super-useful for beginners and advanced users alike - a list of all available tools with pros and cons. I think there can be both plugins for code editors and entire IDEs. Or alternative interfaces like Jupyter.