If your goal is general browsing, use a modern supported browser instead.
Using Firefox 3.6 in 2026 presents significant dangers that you should consider before installation:
This version was released in 2010. It lacks modern protection against malware and phishing. Web Compatibility: download old version of mozilla firefox 3.6
: This site specializes in preserving legacy software. You can find Firefox 3.6.x versions for various Windows editions .
Click into the 3.6.28/ folder. You will see sub-folders for: If your goal is general browsing, use a
: Select your preferred language code (e.g., en-US for English-United States). Download the Installer : For Windows, click Firefox Setup 3.6.exe . For Mac, click Firefox 3.6.dmg . Installation & Critical Precautions Mozilla Firefox 3.6.27 Release Notes
Once running:
While mostly obsolete, some users still seek version 3.6 for specific technical reasons: