This chapter was about creating interactive web applications using ROS. The chapter was started with discussing basic ROS packages and JavaScript modules used for building a robot web application. After discussing the packages, we discussed how to install it them. After setting up all the packages, we started our first project, teleoperating the robot from a web browser. In that application, we controlled the robot using a keyboard and visualized the robot at the same time. The next project was about controlling the joint state of the robot. We created the application and tested it on the PR2 robot. The third project was about creating a robot surveillance application, which combines keyboard teleoperation and image streaming from the robot. The last project was about creating a cool speech recognition-based robot controller application.