React Native Desktop - Build OS X desktop apps using React Native
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.
Arbiter IDE - The offline-friendly, in-browser IDE for pure JS prototypes
Koding - A new way for developers to work.
CodeOnline - A remote and secure workspace powered by VSCode
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.