Mozilla Corporation

http://developer.mozilla.org/en/docs/Gecko_SDK

Gecko SDK

Updated at By Mozilla Corporation
Gecko SDK consists of XPIDL files, headers and tools which enable the creation of XPCOM components.

Mozilla Thunderbird

Updated at By Mozilla Corporation
Thunderbird is a Mozilla email software that has undergone a complete overhaul, offering users a revitalized and improved messaging platform.

Firefox with Google Toolbar

Updated at By Mozilla Corporation
Firefox browser is a fast and secure web browser with the added benefit of the Google Toolbar. AutoFill and SpellCheck features make browsing easier. A revolutionizing free software.