Sprite Cow : Sprite Cow helps you get the background-position, width and height of sprites within a spritesheet as a nice bit of copyable css.
grunt : Grunt is a task-based command line build tool for JavaScript projects
Hurl : Hurl is a command line tool that runs HTTP requests defined in a simple plain text format.
It can chain requests, capture values and evaluate queries ...
howdoi : Instant coding answers via the command line.
Sizzy : A tool for developing responsive websites crazy-fast.
Open sourced : https://github.com/kitze/sizzy
PurgeCSS is a tool to remove unused CSS. It can be part of your development workflow.
