Mozilla maintains an extensive archive of every version ever released. You can navigate their server to find the "3.6" directory, select your operating system (Windows, Mac, or Linux), and download the locale-specific installer.

Firefox 3.6 has hundreds of known security flaws compiled over the last decade. Malicious websites can exploit these vulnerabilities to execute code on your computer.

You can browse and download exactly what you need directly from the ⁠Mozilla FTP Releases Directory .

When Mozilla Firefox 3.6 launched in January 2010, it was a massive leap forward for web browsing. It introduced the revolutionary (allowing users to easily skin their browser with a single click), crash protection for plugins like Adobe Flash, and vast improvements in JavaScript performance.

Before installing, ensure your host environment meets the lightweight prerequisites of this 2010 software: Operating System Minimum Processor Minimum RAM Hard Drive Space (2000, XP, Vista, 7) Pentium 233 MHz Mac OS X (10.4, 10.5, 10.6) Intel or PowerPC G4 Linux (Kernel 2.2.14 or higher) Pentium II 300 MHz Step-by-Step Installation and Isolation Setup