When comparing ShiftEdit vs JSFiddle, the Slant community recommends JSFiddle for most people. In the question“What are the best cloud IDEs?” JSFiddle is ranked 5th while ShiftEdit is ranked 7th. The most important reason people chose JSFiddle is:
Ranked in these QuestionsQuestion Ranking
Pro Low cost, high quality
Pro Revision control
Pro Syntax checking
Highlights syntax errors and automatically fix some errors
Pro Supports multiple file access points
Access files from FTP, SFTP, WebDAV, Dropbox, Google Drive or Amazon S3
Pro Supports autocomplete
Code completion for HTML tags, CSS and PHP code assist
Pro SSH support
Allows connecting directly to a server and run commands on that server.
Pro Good Customer Support
Help requests get answered quickly and successfully.
Pro CoffeeScript and SCSS support
Pro Allows collaborating on code
JSFiddle makes it easy to save the code snippets and send the link to others who can view and edit the code.
Pro Supports a wide variety of frameworks and extensions
JSFiddle can switch to selection of frameworks and extensions including jQuery, AngularJS, ReactiveJS, D3 simply from a dropdown.
Con Not user friendly
Con Non free/libre (proprietary)
Con Not actually an IDE
JSFiddle is not actually an IDE and is only suitable for small blocks of code.