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JsFiddle is a playground for web developers. One can use it as an online editor for snippets build from HTML, CSS and JavaScript. The code can then be shared with others, embedded on a blog, etc. We aim to support all actively developed frameworks.
jsfiddle.net
 1180    28     Thursday, March 1, 2012    # JavaScript # Ajax # testing
The HTML5 test score is an indication of how well your browser supports the upcoming HTML5 standard and related specifications. Find out which parts of HTML5 are already supported by your browser today and compare the results with other browsers.
html5test.com
 655    17     Friday, June 28, 2013    # HTML5 # browser # testing