| Operating system | Latest stable version | Support status | |
|---|---|---|---|
| Windows | 10 and later, Server 2016 and later | 128.4.3esr (x64) | 2018–present |
| 128.4.3esr (IA-32) | 2015–present | ||
| 7, Server 2008 R2, 8, Server 2012, 8.1 and Server 2012 R2 |
115.16.2esr (x64) | 2018–2024 | |
| 115.16.2esr (IA-32) | 2009–2024 | ||
| XP, Server 2003, Vista and Server 2008 |
52.9.1 (IA-32)[1] | 2004–2018 | |
| 2000 | 12.0.1 | 2004–2012 | |
| 10.0.12esr | 2004–2013 | ||
| NT 4.0 (IA-32), 98 and Me | 2.0.0.24 | 2004–2010 | |
| 95 | 1.5.0.14 | 2004–2007 | |
| macOS | 11 (ARM64) and later | 128.4.3esr | 2021–present |
| 10.15 (x64) and later | 128.4.3esr | 2019–present | |
| 10.12–10.14 | 115.16.2esr | 2016–2024 | |
| 10.9–10.11 | 78.14.0 | 2013–2021 | |
| 10.6–10.8 | 45.8.0 | 2009–2017 | |
| 10.5 (IA-32 and x64) | 16.0.2 | 2007–2012 | |
| 10.0.12esr | 2007–2013 | ||
| 10.4 (IA-32 and PPC)–10.5 (PPC) | 3.1.20 | 2005–2012 | |
| 10.2–10.3 | 2.0.0.24 | 2004–2010 | |
| 10.0–10.1 | 1.0.8 | 2004–2006 | |
| Linux (X11/Wayland) | 128.4.3esr (x64) | 2011–present | |
| 128.4.3esr (IA-32) | 2004–present | ||
Legend:
Old version, not maintained
Old version, still maintained
Latest version
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- ^ "Thunderbird System Requirements". mozilla.org. Retrieved 15 July 2018.