Pastebin.com - Pastebin.com is a website where you can store text for a certain period of time.
CodePen - A front end web development playground.
GitHub Gist - Gist is a simple way to share snippets and pastes with others.
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
PrivateBin - PrivateBin is a minimalist, open source online pastebin where the server has zero knowledge of...
JS Bin - Sample of the bin: