Mozilla is a non-profit global organization with approximately 350 paid staff working on open source projects in 20 countries. It started in 1998 within Netscape and the Mozilla Foundation was started in 2003. Some key facts are that Mozilla has over 400 million users, a testing community of over 60,000 volunteers, and a global browser market share of 25-30%. The document encourages joining the Mozilla community to help promote open web standards and support initiatives around localization, development, and community engagement.