BrowserSync vs CodeKit: What are the differences?

BrowserSync: Reload all your browsers, every time you hit save. BrowserSync makes your tweaking and testing faster by synchronising file changes and interactions across multiple devices. It’s wicked-fast and totally free; CodeKit: Mac app that compiles Less, Sass, Stylus, Jade, Haml, Javascript, and Markdown files automatically each time you save. Process Less, Sass, Stylus, Jade, Haml, Slim, CoffeeScript, Javascript, and Compass files automatically each time you save. Easily set options for each language.

BrowserSync and CodeKit belong to "Live Reloading" category of the tech stack.

Some of the features offered by BrowserSync are:

• Interaction sync
• File sync
• URL history

On the other hand, CodeKit provides the following key features:

• Compile Everything - Less, Sass, Stylus, CoffeeScript, Typescript, Jade, Haml, Slim, Markdown & Javascript.
• Auto-Refresh Browsers - Refresh browsers across devices: Mac, PC, iOS, Android & kitchen fridge. Never hit command+R again.
• Bower Built-In - Install 6,000+ components with a single click: Bootstrap, jQuery, Modernizr, Zurb Foundation, even WordPress.

BrowserSync is an open source tool with 10.7K GitHub stars and 689 GitHub forks. Here's a link to BrowserSync's open source repository on GitHub.