which has outsold compatible windows or mac application, other than firefox............
what i mean is that killer applications are mainly relased by win or mac application developers, like ipod, iphone, ipad, win xp and 7, mac os x etc
There are many popular open source software.
WordPress
Firefox
Ubuntu
Handbrake
Audacity
GIMP
VLC
7-Zip
Most popular? Wordpress I'd think qualifies. A Guy
And don't forget core network/systems related software that are open source that are universally used;
--Apache Web Server Runs something like 2/3 of all web servers
--Sendmail
--BIND DNS. Pretty much the defacto standard.
Then there are applications such as
--Drupal
--MySQL
Then popular programming and scripting languages
--PHP
--Perl
--Python
--Ruby
Android is more popular than iOS, and it's open source.
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