General
- CodePen (http://codepen.io/)
- CodePad (https://codepad.co/)
- ideone (http://ideone.com/) 複数言語対応
JavaScript
- jsdo.it (http://jsdo.it/)
- JSFiddle (https://jsfiddle.net/)
CoffeeScript
- js2coffee (http://js2.coffee/)
BABEL
- babel (https://babeljs.io/)
ECMAScript6
- ES6 Fiddle (http://www.es6fiddle.net/)
- ES6 Console (http://es6console.com/)
CSS
- Online CSS Editor (http://www.cssportal.com/online-css-editor/)
- Autoprefixer CSS online (https://autoprefixer.github.io/)
Sass(Scss)
- sassmeister (http://www.sassmeister.com/)
- SCSS Compiler (http://beautifytools.com/scss-compiler.php)
LESS
- LESS TESTER (http://lesstester.com/)
JADE
- Jade - Template (Engine http://jade-lang.com/demo/)
- HTML2Jade (http://html2jade.org/)
- HTML 2 Jade - a converter for HTM (http://html2jade.aaron-powell.com/)
HAML
- HAML to HTML Free Online Converter (https://www.haml-converter.com/)
- Convert HTML to HAML (http://htmltohaml.com/)
Minify
- Online Javascript Compression Tool (http://jscompress.com/)
- JavaScript Minifier (https://javascript-minifier.com/)
minifyされたコードを戻す
- Pretty Diff (http://prettydiff.com/?m=beautify)
- Javascript unpacker and beautifier (http://alexis.m2osw.com/js-beautify/)
PHP
- PHP Sandbox (http://sandbox.onlinephpfunctions.com/)
Other
- htaccess (http://htaccess.madewithlove.be/)
- 正規表現チェッカー (http://okumocchi.jp/php/re.php)
- PHP正規表現チェッカー (http://nelog.jp/regular-expression-online-tools)
- RegExr (http://www.regexr.com/)