Cacher is the code snippet organizer for pro developers

• matchmedia: testing whether or not a media query applies with Javascript
• picturefill: switch image sizes / hidpi / retina (includes matchmedia?)
• Gulp or Grunt: build system / task runner
• NPM: node package manager
• composer: PHP package manager
• bower: JS package manager
• autoprefixer: add browser prefixes
• cssmin: minify and concatenate CSS
• imagemin: lossless image compression
• spritesmith: create sprites
• svgGui: optimize SVGs
• lean modernizer grunt: remove unused modernizer
• uncss: remove unused CSS
• critical or penthouse: Extract & Inline Critical-path CSS
• loadcss: load sitewide css after above the fold css
• uglify: minify & concatenate javascript
• requirejs?: async / onload js
• libsass: convert sass to css
• compass: do compass stuff
• livereload (or that new one, browsersync.io?): reload web page while building

#Testing

• pagespeed: best practices
• pingdom: speed and grade
• webpagetest: speed and grade
• Facebook debugger: social media sharing