Based on our record, CodeSandbox seems to be a lot more popular than MarkdownPad. While we know about 300 links to CodeSandbox, we've tracked only 2 mentions of MarkdownPad. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
(Opened article in Reader mode in browser, copied it, pasted into Markdownpad, cleaned up article (removed image captions, MORE: lines), made the whole article a quote, and pasted here in the comments.). Source: about 2 years ago
(I used http://markdownpad.com/ to quickly format the quoted article for posting here on Reddit). Source: about 2 years ago
Ok last but not least, Codesandbox. This is a newcomer to online collaborative workspaces which seems much more advanced. Codesandbox.io allows you to create node/npm projects, install packages, setup webpack or bundlers, include frameworks like React or Vue, and code in Typescript or JavaScript. It looks and acts like an IDE (VSCode) in the cloud, allowing shareable projects, not just code snippets. - Source: dev.to / 3 months ago
Codesandbox.io — Online Playground for React, Vue, Angular, Preact, and more. - Source: dev.to / 4 months ago
Sync your projects effortlessly with GitHub. Codesandbox. - Source: dev.to / 4 months ago
Use online code editors such as Codesandbox or Stackblitz. They let you focus on writing code rather than dealing with local environment complexities. - Source: dev.to / 4 months ago
For this article, I will be using an online code editor called Codesandbox. You can go ahead and use it as well, you can also create normal React js application on your computer. - Source: dev.to / 5 months ago
Typora - A minimal Markdown reading & writing app.
CodePen - A front end web development playground.
StackEdit - Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.