The purpose of this paper is to introduce educators to three types of applets that are compatible with smartphones, tablets, and desktop computers: screencasting applets, graphing calculator applets, and student response applets. The applets discussed can be seamlessly and effectively integrated into classrooms to help facilitate lectures, collect assessment data, and provide students with additional instructional support. While three specific applets will be discussed, there are many applets available, each with diverse features, varying capabilities, and different price points. In addition to discussing various applications of each type of applet, the authors will share their experiences with using these technologies in the classroom and disclose some tricks-of-the-trade.