An extension is a piece of software that can be added to an Adobe application to enhance its capabilities. You can add extensions to Dreamweaver, Flash Professional, Photoshop, InDesign, InCopy, Illustrator, Adobe Premiere Pro, Prelude, and Captivate. Bridge and Fireworks is not supported in CS6 or later.
Extension Manager CC 7.0.x and 7.1.x can be used with Dreamweaver CC, Flash Professional CC, Photoshop CC, InDesign CC, InCopy CC, Illustrator CC, Adobe Premiere Pro CC, Prelude CC, and Captivate CC.
Extension Manager CC 7.2 and later can be used with Dreamweaver CC and 2014, Flash CC and 2014, Photoshop CC and 2014, InDesign CC and 2014, InCopy CC and 2014, Illustrator CC and 2014, Adobe Premiere Pro CC and 2014, Prelude CC and 2014, and Captivate CC.