In John Lilly’s blog post in November about Firefox market share, he said one of the most important factors for figuring out how Firefox is doing is the health of addons.mozilla.org (also known as AMO). AMO recently hit a few milestones, so I thought an update (or perhaps initial view) of the add-ons community was in order.
Earlier this week, AMO served its 600 millionth add-on download. That’s original downloads, not including updates. We currently have over 4000 add-ons hosted on the site and between 800,000 and 1 million downloads every day. The site has around 4.5 million pageviews per day, not including services hosted on AMO such as update checks and blocklisting.
AMO now receives around 100 million add-on update pings every day. This is similar, but not exactly the same, to the “ADU” number as explained on John’s blog.
The application breakdown of those 100 million update pings looks like this for a particular day (in this case last Wednesday):

That’s over 1 million add-ons used daily in Firefox 3 alphas, betas, and trunk. So, in case you’ve missed our previous requests, please update your add-ons for Firefox 3!
We’re working to make this kind of data available to add-on developers in the near future, so look for a post on the Web Development blog about that soon.

Comments (5)
Great post. Any chance you could break it down by OS?
Thank you for post.
I translated it into german.
http://www.lfirefox.de/2008/02/04/600-millionen-addons-downloads/
So, what’s the prize for the one-billionth add-on download?
Is there an easy way to track how many times an individual Add-On has been downloaded? Thanks.
Great post, and I too was overwhelmed by this number. Any ideas on how to estimate the total number of ppl that have downloaded add-ons? I have six add-ons installed myself, but don’t know if that’s anywhere near average.
Trackbacks/Pingbacks (27)
[...] Justin Scott (fligtar) wrote an interesting post today on 600000000 Add-on DownloadsHere’s a quick excerptIn John Lilly’s blog post in November about Firefox market share, he said one of the most important factors for figuring out how Firefox is doing is the health of addons.mozilla.org (also known as AMO). AMO recently hit a few milestones … [...]
[...] Blog of Metrics announced some interesting numbers about Firefox add-ons server by Mozilla [...]
[...] milioni di add-ons per Mozilla scaricati fino a oggi Il “Blog of Metrics” di Mozilla ha pubblicato di recente alcune cifre interessanti riguardo il server degli add-ons per [...]
[...] blog da Mozilla que costuma fazer breves estudos ás suas estatísticas apresentou hoje uns números interessantes [...]
[...] 600,000,000 Add-on Downloads < Blog of Metrics [...]
[...] AMO reached a pretty significant milestone - 600 Million add-ons delivered. Wow! There’s a great post on the Mozilla blog of metrics summarizing the results. That’s fresh downloads and [...]
[...] pmLast updated: January 31, 2008 at 2:42 pmFiled under: Mozilla 1 Views Mozilla Blog of Metrics announced some interesting numbers about Firefox add-ons server by Mozilla [...]
[...] numbers today on the news. Blog of Metrics today announced that addons.mozilla.org reached 600 000 000 add-on downloads. The website currently receives around [...]
迄今为止,Mozilla插件下载量已经达到6亿
Mozilla Blog的Metrics总结了关于Mozilla Add-ons的一些数字,数量级比较惊人,可见Firefox的市场份额不可小觑。同时,最近的消息是欧洲的Firefox市场份额已经达到了23%。 * 具备4000个扩展 * 每天下载8…
[...] Pueden ver la nota original en el blog de Mozilla. [...]
Story added…
This story has been submitted to fsdaily.com! If you think this story should be read by the free software community, come vote it up and discuss it here:
http://www.fsdaily.com/Community/600_000_000_Firefox_Add_on_Downloads...
[...] Vía| Blog Mozilla [...]
[...] [Firefox/Mozilla:] 600,000,000 Add-on Downloads [...]
[...] divulgados no Mozilla Links e no Mozilla Blog of Metrics alguns dados bem interessantes sobre o Firefox e os downloads de extensões feitos através do site [...]
[...] hit a huge milestone the other day when the download counter for their add-ons rolled over the 600 million mark. That number only includes downloads from the add-ons sitea, and on top of that there are about 100 [...]
[...] el blog de Mozilla Blog of Metrics ha anunciado en el día de hoy algunas cifras sobre sus descargas de complentos de Firefox que no [...]
Mozilla alcanza los 600 millones de complementos descargados…
La Fundación Mozilla anuncia que han alcanzado los 600 millones de complementos (temas y extensiones) descargados.
600 millones de descargas sin contar las actualizaciones, a un ritmo diario de entre 800.000 y 1.000.000 de descargas.
Con 4.000 e…
[...] Blog of Metrics di Mozilla ha presentato alcuni dati interessanti sui componenti aggiuntivi per Firefox ospitati su [...]
[...] hit a huge milestone the other day when the download counter for their add-ons rolled over the 600 million mark. That number only includes downloads from the add-ons sitea, and on top of that there are about 100 [...]
[Firefox/Mozilla:] 600,000,000 Add-on Downloads | Deliggit.com…
blog.mozilla.com
AMO now receives around 100 million add-on update pings every day, which means…
[...] 600,000,000 Firefox add-on downloads The Blog of Metrics reports, “Earlier this week, AMO served its 600 millionth add-on download. That’s original downloads, not including updates. We currently have over 4000 add-ons hosted on the site and between 800,000 and 1 million downloads every day. The site has around 4.5 million pageviews per day, not including services hosted on AMO such as update checks and blocklisting.” For further information, including details about add-on update pings and what all of this means, see the Metrics blog post. [...]
[...] milionowy pobrano dodatek (rozszerzenie) do programów Mozilli na początku zeszłego tygodnia, we wpisie możemy także się dowiedzieć, że jest to liczba pobrań, nie wliczając pobrań aktualizacji. [...]
[...] - Blog of Metrics http://www.blognone.com Posted in ICT | Leave a [...]
[...] million Mozilla add-ons downloaded to date Mozilla Blog of Metrics announced some interesting numbers about Firefox add-ons server by Mozilla [...]
[...] week AMO reached a pretty significant milestone - 600 Million add-ons delivered. Wow! There’s a great post on the Mozilla blog of metrics summarizing the results. That’s fresh downloads and doesn’t even [...]
[...] The Blog of Metrics reports, “Earlier this week, AMO served its 600 millionth add-on download. That’s original downloads, not including updates. We currently have over 4000 add-ons hosted on the site and between 800,000 and 1 million downloads every day. The site has around 4.5 million pageviews per day, not including services hosted on AMO such as update checks and blocklisting.” For further information, including details about add-on update pings and what all of this means, see the Metrics blog post. [...]
[...] Firefox based on the calculations illustrated in this blog post (and 50 million daily pings), and 600 million add-on downloads. With Firefox 3 just around the corner, it’ll be great to see Firefox and Mozilla milestone [...]