For more information, please visit the following pages:

• Thunderbird
• Mozilla Foundation
• Gecko

Latest user agents:

• Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1
• Mozilla/5.0 (Windows NT 6.2; WOW64; rv:12.0) Gecko/20120428 Thunderbird/12.0.1
• Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:12.0) Gecko/20120428 Thunderbird/12.0.1
• Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20120428 Thunderbird/12.0.1