Prokon 5.0.2 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Also the program is known as "ProKon - The Calculation Companion".
We recommend checking the downloaded files with any free antivirus. This PC program is compatible with Windows XP/XP Professional/Vista/7/8/10/11 environment, 32-bit version. The most popular versions of the tool are 32-Bit Win 9598NT2000, 10.0 and 7.0. Commonly, this program's installer has the following filenames: prokon.exe, Prokon32.exe, Genpref.exe, LiveUpdate.exe and Pf.exe etc. This program is a product of ShowMe Software. The program is categorized as Office Tools.
From the developer:
ProKon (short for Professional Converter) is a 32-bit Microsoft Windows program that is intended to perform numerical conversions between the various units used in the scientific and business community.
Early versions of ProKon were capable of performing this, and only this, function. As the program has evolved, many things have been added so that the current version is capable of doing much, much more.
You may want to check out more software, such as Prokon DWG Engine or RobotLink, which might be similar to Prokon.