Massive Open Online Courses (MOOCs) began in 2012 with Google's Power Searching course which had 155,000 registered students. Google then made its course building technology openly accessible. This Course Builder technology allows for online education on a global scale through open source coding and a familiarity with HTML, JavaScript, Python, and Google's App Engine platform. Course Builder is currently used by universities like Indiana University and UC San Diego to create open online courses through MOOCs that are free and flexible for students to participate in, though they may lack interaction.