HTTP Archive : The HTTP Archive tracks how the Web is built.
HTML5 Cross Browser Polyfills : So here we're collecting all the shims, fallbacks, and polyfills in order to implant html5 functionality in browsers that don't natively support them.
regex101 : Free PCRE-based regular expression debugger with real time explanation, error detection and highlighting.
enable cross-origin resource sharing : Cross-Origin Resource Sharing (CORS) is a specification that enables truly open access across domain-boundaries. If you serve public content, please c...
Stack Overflow : Stack Overflow is a question and answer site for professional and enthusiast programmers.
Collection of thinking tools and frameworks to help you solve problems, make decisions and understand systems.