CodePen - A front end web development playground.
CodeShare.io - Realtime code sharing for developers
Pastebin.com - Pastebin.com is a website where you can store text for a certain period of time.
Logpasta - Logpasta is a simple to use CLI-based application that allows you to paste your posts.
Liveweave - Liveweave is a HTML5, CSS3 & JavaScript playground for web designers and developers
Static Save - Quickly host CSS, JAVASCRIPT, TXT, JSON and XML online for free with StaticSave.