Here is the collection of free online code editors to test your snippets.
Write and edit HTML and CSS right in your browser. Instantly preview your work. Then host and share your finished pages with a single click.
Visit Mozilla Thimble
codepad was created by Steven Hazel and it’s an online compiler and collaboration tool.It’s a pastebin that executes code for you.The usage is simple.You paste your code, and codepad runs it and gives you a short URL you can use to share it.Paste the URL into chat or email to get help or to show someone how to do something. Or just try things out when you don’t have an interpreter handy. It works well on many phones.
dabblet is an interactive playground for quickly testing snippets of CSS and HTML code. It uses -prefix-free, so that you won’t have to add any prefixes in your CSS code. You can save your work in Github gists, embed it in other websites and share it with others.It currently only supports modern versions of Chrome, Safari and Firefox.
Google Code Playground
Google Code Playground is another great online tool test and run your code without opening an external editor.All of the API’s are loaded for you in the Pick an API box.
Visit Google Code Playground
Ideone is something more than a pastebin; it’s an online compiler and debugging tool which allows to compile and run code online in more than 40 programming languages.Choose a programming language, enter your source code and input data into text boxes. Then check or uncheck run code (whether to execute your program) and private (whether not to list your code in the recent codes page) checkboxes, click the submit button and watch your snippet being executed.
Another online tool for editing your code snippets.Practiocode renders HTML, CSS and VBScript.
CSSDesk is a website that allows developers to quickly test snippets of CSS code, and watch the result appear live.
Visit jsbin v.2
It’s another real-time playground tool to test your HTML code.
Visit HTMLEdit Square
Rendurr is an another interactive playground to test your code snippets.
Visit Rendurr 2.3
Similar like other HTML playgrounds,you just paste your code and see the result in browser window.
You can test your PHP code here on many php versions.
Visit PHP Sandbox