Some time ago I started to list all the open source OS/2 software we have available for OS/2 and eComStation.
A partial list was created (sorry, I'm missing a lot of the Qt4 ported apps).
Check it out.
On the EDM/2 wiki I'm also trying to rebuild this list. For the moment it had listed the OS/2 Drivers that we have as open source software:
(EDM/2 might be slow since this days netlabs is switching servers)