Mozilla software include a web browser, a mail client, a chat client, XUL (Extensible User Interface Language) and
XPCOM (Cross Platform Component Object Model).

XUL allows developers using Mozilla to build cross-platform user interfaces using a single unified language instead of having to create separate UIs for each platform. XPCOM allows for cross-platform communication between software components and pieces of code.

Mozilla.org is the developer community for Mozilla developers, many of whom work for Netscape. Netscape uses mozilla.org and the developer community around to build Netscape 6, a commercial web browser, on the Mozilla code. Netscape does not own Mozilla.

Loolomg at the future, there are only two browsers that can support advanced capabilities,  Internet Explorer and Mozilla. And since Netscape 6 uses the same codebase as Mozilla, Netscape 6 and Netscape 7 will be strong players in the future market. The distinct advantage Mozilla has over IE is that Mozilla is inherently cross-platform and can run on just about any operating system of choice. Microsoft is at a disadvantage here because their browser for each platform they support (Windows and Mac) is developed completely separately using different codebases and different development teams.

Many hope that Mozilla will thrive in order to blunt the dominance of Microsoft.