You could have downloaded Engineer's Aide SiNET 6.31 from our software library for free. Commonly, this program's installer has the following filenames: Launcher.exe, SINET.EXE and SiNET7.exe etc. The most popular version among the program users is 6.3. This program is a product of EPCON International. The software can also be called "Engineers Aide SiNET". The software lies within Education Tools, more precisely Science Tools.
From the developer:
Engineer's Aide SiNET provides software applications to size and cost over 20 different classes of equipment while also providing you with the most advanced fluid flow simulator in the industry, best-in-class physical property components, and additional applications for ASME Steam Tables and unit conversions.
You may want to check out more software, such as Scholar's Aid Lite, Aide PDF to DXF Converter or Scholar's Aid Academic Edition, which might be similar to Engineer's Aide SiNET.