Drawpile Ver. 0.6.0 is available for the OS/2-eCS platform:
http://trac.netlabs.org/qtapps/wiki/QT4%20Graphics

"Drawpile is a Free software collaborative drawing program that allows multiple users to sketch on the same canvas simultaneously."
This port requires the Qt 4 libraries and libc064.dll .
Port by: Gianfilippo Cimmino
Source: