Michael Haupt wrote:
> Hi Andreas,
> 
> On Fri, Jan 22, 2010 at 8:38 AM, Andreas Raab <andreas.raab at gmx.de> wrote:
>> Easy to find out. Using the "80% rule" (i.e., how many contributors make up
>> at least 80% of the commits) we end up with:
>>
>> - http://source.squeak.org/39a: 2 contributors (sd, md)
>> - http://source.squeak.org/310: 1 contributor (edc)
>> - http://squeaksource.com/Pharo: 2 contributors (sd, md)
>> - http://squeaksource.com/Seaside30: 3 contributors (lr, jf, pmm)
> 
> interesting, thanks; but these are all Squeak-ish in some ways. Is
> there a statistics facility for such questions on SourceForge? Going
> to look ...

Dunno. The only other thing I saw was about Linux kernel development here:

https://www.linuxfoundation.org/publications/linuxkerneldevelopment.php

But these numbers are so out there that they're not comparable. I mean 
700+ developers from 90+ companies :-)

Cheers,
   - Andreas