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Download Firefox (English)

• Download Now - Free Windows (3.5.5, English (US), 7.7MB)
• Download Now - Free Linux (3.5.5, English (US), 9.4MB)
• Download Now - Free Mac OS X (3.5.5, English (US), 17.6MB)

Release Notes - Other Systems and Languages

Download Thunderbird (English)

• Download Now - Free Windows (2.0.0.23, English (US), 6.4MB)
• Download Now - Free Linux (2.0.0.23, English (US), 11MB)
• Download Now - Free Mac OS X (2.0.0.23, English (US), 19MB)

Release Notes - Other Systems and Languages