The document discusses various types of application software, including general purpose applications, custom applications, web browsers like Firefox Reality, office suites like Microsoft Office 365, photo editing software like Adobe Photoshop Elements CC 2020, video editing software like Adobe Premiere Pro CC, antivirus software like Norton Security, sound editing software like Pro Tools 2020, and games like Pokemon Go. It provides descriptions and details about the uses and features of these different application categories and popular examples within each category.