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CodeKit - CodeKit allows you to optimize the performance of your website by automatically and efficiently compiling a variety of popular languages.
Smaller - Make your websites load faster
Prepros - Compile Less, Sass, Scss, Stylus, Jade, Coffeescript, Haml and Markdown with live browser refresh.
Website Grader - Grade your website's strengths and weaknesses in seconds.
Live.js - Live. js. one script closer to designing in the browser. Say goodbye to Alt-Tab. Live.
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.