eCalc 2.0 is an easy to use, but powerful calculator for OS/2 and eComStation.
It's based on the eCalc 1.x application, developed by Nick Morrow. eCalc 1.x was part of eComStation 1.x.

The source is a Vispro/Rexx project. You may find Vispro/Rexx on Hobbes.
It is now available for donwload at: http://www.subsys.de/eCALC/download/ecalc_source_2rev32.zip
Project URL: http://www.subsys.de/eCALC/
Source: OS2.org