Pastebin.com
Free
Pastebin is a website where you can store text online for a set period of time.
CodePen
Freemium
CodePen is an online community for testing and showcasing user-created HTML, CSS and JavaScript code snippets.
Liveweave
Free
Liveweave is a HTML5, CSS3 & JavaScript playground for web designers and developers.
Dabblet
Open Source
Dabblet is an interactive CSS playground and code sharing tool.
CSSDesk
Free
CSSDesk is a online HTML/CSS sandbox.
jsFiddle
Free
jsFiddle lets developers play with the three core elements of Web development.
JS Bin
Freemium
JS Bin is a live pastebin for HTML, CSS & JavaScript and a range of processors, including SCSS, CoffeeScript, Jade and more.
repl.it
Free
repl.it is a cloud coding environment.
kodeWeave
Open Source
kodeWeave is a HTML/ CSS playground app.
collabedit
Freemium
Collabedit is an online code editor that lets people collaborate in real-time.
Compare Plunker with alternatives
Compare Pastebin.com and Plunker and decide which is most suitable for you.