Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.
AWS Cloud9 - AWS Cloud9 is a cloud-based integrated development environment (IDE) that lets you write, run, and debug your code with just a browser.
Atom - At GitHub, we’re building the text editor we’ve always wanted: hackable to the core, but approachable on the first day without ever touching a config file. We can’t wait to see what you build with it.
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
Koding - A new way for developers to work.