Taskbar version 2.4.13 has been ported (2015/01/15) to OS/2.
"Taskbar is a transparent taskbar to collect users favorite applications and run them in a simple click. It is inspired from Kde 3.4 taskbar. Application developed using Qt4"

Port by Elbert Pol
Source: OS/2 Warp News and Rumors
Source: eCSoft/2