Releases/Support Levels

Mozilla products (Firefox, Firefox for mobile, and Thunderbird) are built from branches of the Mozilla codebase. These branches are supported differentially by our build, test and release engineering infrastructure according to the following descriptions:

Supported Product Branch

Supported Product Release Branch

• mozilla-release - builds Firefox
• comm-release - builds Thunderbird
• mozilla-esr10 - builds Firefox ESR 10

Development/Testing Branches

• mozilla-central - builds Firefox Nightlies
• mozilla-aurora - builds Firefox Aurora
• mozilla-beta - builds Firefox Beta
• comm-central- builds Thunderbird Nightlies
• comm-aurora - builds Thunderbird Aurora
• comm-beta - builds Thunderbird Beta

Other Active Development Branches

• jaegermonkey
• try - for try builds

Unsupported Product Branch

• mozilla-1.9.2 - built Firefox 3.6.x
• comm-1.9.2 - built Thunderbird 3.1.x
• all others