Plunker is described as 'online community for creating, collaborating on and sharing your web development ideas' and is an website in the Development category. There are more than 50 alternatives to Plunker, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android. The best alternative is Pastebin.com, which is free. Other great sites and apps similar to Plunker are CodePen (Freemium), jsFiddle (Free), Repl.it (Freemium) and Google Chrome Developer Tools (Free, Open Source).
The website is mainly used by programmers to store pieces of sources code or configuration information, but anyone is more than welcome to paste any type of text. The idea behind the site is to make it more convenient for people to share large amounts of text online.
CodePen is a social development environment for front-end designers and developers. 👋 It’s the best place to build and deploy a website, show off your work, build test cases, and find inspiration. We call them Pens.
Repl.it is a complete, collaborative cloud development environment in the browser featuring everything from linters and debuggers to third-party packages, hosting and deployment. FEATURES - Real-time collaborative code editing. - Live chat in the workspace.