Fluid is a WebKit-based site-specific browser (SSB) for Mac OS X created by Todd Ditchendorf. It has often been compared to Mozilla Prism and mentioned as a way to make web applications more like native desktop applications.
It comes natively with support for userscripts (like Greasemonkey for Mozilla Firefox) and userstyles (like Stylish for Mozilla Firefox) for the modification of the look and feel of web applications. It also integrates with Apple’s Cover Flow utility.
Web applications like Gmail, Facebook, Campfire and Pandora are becoming more and more like desktop applications every day. Running each of these web apps in a separate tab in your browser can be a real pain.
Fluid lets you create a Real Mac App (or “Fluid App”) out of any website or web application, effectively turning your favorite web apps into OS X desktop apps.
Creating a Fluid App out of your favorite website is simple. Enter the website’s URL, provide a name, and optionally choose an icon. Click “Create”, and within seconds your chosen website has a permanent home on your Mac as a real Mac application that appears in your Dock.
Fluid is free. You can download Fluid for free and create as many Fluid Apps as you like.