Led by the World Wide Web Consortium, the Web Standards Project is an effort to make "technologies for creating and interpreting web-based content." These standards allow many types of languages and object models to be compatible on different browsers and platforms. The project's home page has many resources for users to learn about standards and guidelines. Some of the major topics include HTML, XML, Cascading Style Sheets, and accessibility. An informative section on Web browsers compares the standards compliance of eight popular browsers. Special email addresses of some browser manufacturers are also given, so users can report bugs to help improve the quality of the software.