Firefox 78.8.esr Download [extra Quality] Today

The Extended Support Release (ESR) is developed by Mozilla for organizations—including universities, schools, and businesses—who need to deploy and maintain Firefox on a large scale.

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Firefox ESR 78.0esr, See All New Features, Updates and Fixes The Extended Support Release (ESR) is developed by

While it does not receive new user-facing features, it does receive critical security fixes. See All New Features

Ideal for legacy web applications that may not function properly on modern browsers.