CodeKit is an excellent tool during the web design process. As a front-end developer, I use it to compile all my files, css, JS, etc., and optimise the images. It also has a great browser sync tool to show changes without refreshing.

I've never had to learn Gulp, or Webpack, or any of those other "bundle your web development assets" toolkits, because I use CodeKit, which has been around longer than most of them. It's easy to use, has a GUI interface, and the best release notes of any app I've ever owned.

Has been very helpful for many of our deliverables but we're finding it quite glitchy and sometimes laggy. We've been looking for alternate, more reliable solutions