| Language | Version | Windows | Mac OS X | Linux | |
|---|---|---|---|---|---|
| Basque | Euskara | 2.0.0.6 | Download | Download | Download |
| Belarusian | Беларуская | 2.0.0.6 | Download | Download | Download |
| Bulgarian | Български | 2.0.0.6 | Download | Download | Download |
| Catalan | català-valencià | 2.0.0.6 | Download | Download | Download |
| Chinese (Simplified) | 中文 (简体) | 2.0.0.6 | Download | Download | Download |
| Chinese (Traditional) | 正體中文 (繁體) | 2.0.0.6 | Download | Download | Download |
| Czech | Čeština | 2.0.0.6 | Download | Download | Download |
| Danish | Dansk | 2.0.0.6 | Download | Download | Download |
| Dutch | Nederlands | 2.0.0.6 | Download | Download | Download |
| English | English | 2.0.0.6 | Download | Download | Download |
| English (British) | English (British) | 2.0.0.6 | Download | Download | Download |
| Finnish | suomi | 2.0.0.6 | Download | Download | Download |
| French | Français | 2.0.0.6 | Download | Download | Download |
| German | Deutsch | 2.0.0.6 | Download | Download | Download |
| Greek | Ελληνικά | 2.0.0.6 | Download | Download | Download |
| Gujarati | ગુજરાતી | 1.5.0.13 | Download | Download | |
| Hebrew | עברית | 1.5.0.13 | Download | Download | Download |
| Hungarian | Magyar | 2.0.0.6 | Download | Download | Download |
| Irish | Gaeilge | 2.0.0.6 | Download | Download | Download |
| Italian | Italiano | 2.0.0.6 | Download | Download | Download |
| Japanese | 日本語 | 2.0.0.6 | Download | Download | Download |
| Korean | 한국어 | 2.0.0.6 | Download | Download | Download |
| Lithuanian | lietuviškai | 2.0.0.6 | Download | Download | Download |
| Macedonian | Македонски | 2.0.0.6 | Download | Download | Download |
| Norwegian (Bokmål) | Norsk bokmål | 2.0.0.6 | Download | Download | Download |
| Norwegian (Nynorsk) | Norsk nynorsk | 2.0.0.6 | Download | Download | Download |
| Polish | polski | 2.0.0.6 | Download | Download | Download |
| Portuguese (Brazilian) | Português (do Brasil) | 2.0.0.6 | Download | Download | Download |
| Portuguese (Portugal) | Português (Europeu) | 2.0.0.6 | Download | Download | Download |
| Punjabi | ਪੰਜਾਬੀ | 2.0.0.6 | Download | Download | Download |
| Russian | Русский | 2.0.0.6 | Download | Download | Download |
| Slovak | slovenčina | 2.0.0.6 | Download | Download | Download |
| Slovenian | Slovensko | 2.0.0.6 | Download | Download | Download |
| Spanish (Argentina) | Español (Argentina) | 2.0.0.6 | Download | Download | Download |
| Spanish (Spain) | Español (de España) | 2.0.0.6 | Download | Download | Download |
| Swedish | Svenska | 2.0.0.6 | Download | Download | Download |
| Turkish | Türkçe | 2.0.0.6 | Download | Download | Download |
Thunderbird 1.5: This version of Thunderbird will be supported until October 18, 2007 with security and stability updates. We strongly encourage all users to upgrade to Thunderbird 2.
Unsupported versions of Thunderbird for other platforms are also available.
Archived versions of previous Thunderbird releases are also available.