Extensions are like apps for Firefox.
They add features to Firefox to make browsing faster, safer, or just plain fun.
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
Automatically learns to block invisible trackers.
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.