A whacking two billion add-ons for Firefox have now been downloaded, Mozilla has confirmed. The eye-watering figures show just how popular the open source extras are for Firefox users.

The number of downloaded add-ons is greater than the number of people who use the internet around the world. That’s mighty impressive, even if only about 150 million of said add-ons are used every day.

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Related links:
- Firefox Mobile lands in Android
- Firefox Home submitted to App Store
- Firefox hits one billion downloads
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It’s taken almost two years for Mozilla to double its downloaded add-ons, with the billion mark being passed in November 2008. To celebrate, it’s unleashed a Top 25 collection of add-ons, including Glue, AdBlock Plus and Destroy The Web.

What’s your favourite Firefox add-on? Tell us now on Facebook or Twitter.

Via TechCrunch