Mozdev.org

Firefox 3.5 is right around the corner, and developers are getting ready by updating their addons as quickly as possibly. At Mozdev, we see a lot of projects are currently working towards Firefox 3.5 support, with some of them claiming full support.

First, let's look at overall support for Firefox versions at Mozdev. We currently have 159 active projects with 415 extensions supporting Firefox; 55 of those projects have released 175 extensions at Mozdev which is what we will use for our stats below.

First we have a breakdown of the Firefox versions supported:

Other 8%

<2* 6%

2* 15%

3.0* 41%

3.5* 29%

We can clearly see here that Firefox 3 and 3.5 support is strongest at Mozdev (70%), but we still have 30% (!!) of extensions that don't support a current release.

Of the 29% that support Firefox 3.5, the breakdown is like this:

Alpha 75%

Beta 10%

Final 15%

This is a good bit different from what AMO is seeing, with 81% of their most popular extensions being ready for Firefox 3.5. I'm sure this is because Mozdev doesn't have the sheer number of addons that AMO does and our release system isn't used as much.

Mozdev is excited about the upcoming Firefox 3.5 release; let us know if there's anything we can do to help improve our tools to make it easier to get your extension pushed out for this great software!