"A curated list of design and UI resources from stock photos, web templates, CSS frameworks, UI libraries, tools and much more."
"The best place to build, test, and discover front-end code. CodePen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn and debug, and find inspiration."
"JS Bin is ultimately a code sharing site. Along with the code, the complete output of the code is also shared with other developers, colleagues and/or students. As you type into one of the editor “panels”, you and anyone watching your bin will see the output being generated in real-time in the output panel."
"Our mission is to enable any creator to build and share their ideas. By removing complexity and simplifying collaboration, we want to allow everyone to create things with code."
"Plunker is the best tool to prototype, experiment, share and debug your ideas on the web platform. From idea to implementation, Plunker helps you build something quickly and frictionlessly."
"Replit is a coding platform that lets you write code and host apps. It also has many educational features built-in, making it great for teachers and learners too."