[maemo-developers] list of closed/open source apps?

[From: Ian Rose]

Hello,

Apologies if this was previously answered on the forums (is there a 
search feature?  I ended up using perl to grep the subject listings 
pages - not too efficient...)

The following mail states that "some applications are closed [source]" 
such as file manager and media player:

http://lists.maemo.org/pipermail//maemo-developers/2007-November/012446.html

Is there a list anywhere of which applications are or aren't open 
source, or is the only way to go dig through the OS source code and see 
if the application you want happens to be there?  In this case I'm 
interested in the Sketch application, so if anyone knows the 
availability of that specifically, I'd love to hear it.  It appears to 
perhaps be related (or identical?) to the Sketch (aka Skencil) project:

http://sourceforge.net/projects/sketch/

but I am guessing that there is a maemo-specific version.

thanks very much for any help,
Ian