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.
One other note: in Sierra, Apple has made a change that forces all of your Fluid Apps to use Separate Cookie Storage by default. You no longer have to purchase a license for this feature, and when running Fluid on Sierra or later, there is no longer an option to change this feature.
Web applications like Gmail, Facebook, Campfire and Pandora are becoming more and more like desktop applications every day.
mac OS Sierra introduces Siri to Mac — along with new ways to enjoy your photos, shop more securely online, and work more seamlessly between devices.Learn more Keep your growing library organized and accessible.Perfect your images and create beautiful gifts for sharing.Dark Mode is just what it sounds like, it basically inverts the You Tube color scheme so that the background and surrounding interface of You Tube is blacks and dark grey rather than whites.It looks great, and you can enable Dark Mode for You Tube on any web browser.