The document discusses how the web is built on open technologies and open standards. It highlights several examples of open-source technologies that power the web like Linux, HTTP, HTML, CSS, JavaScript, PHP, MySQL, Apache, and content management systems like WordPress and Drupal. It also discusses how the web is open to new technologies through standards bodies like IETF and W3C as well as companies, universities, and individual engineers and developers. Finally, it introduces WeCampus, a social platform the authors are working on for students and teachers to collaborate openly.