[Ilgaz]

Some developers try to stay away from 3rd party frameworks closed or open source.

For example I suggested Growl support to iGetter guys, they said they don't want to depend on a 3rd party tool whether it is open or closed source.

It could be case with Omni group too.

I mean, if nobody from Omni replies, it must be the case :)

It can't be GPL reason (which stops closed source/commercial apps) as its covered by BSD license.