You could have downloaded OpenDSS 7.6.4 from our software library for free. The actual developer of the free program is Electric Power Research Institute. The software lies within Internet & Network Tools, more precisely Network Tools.
The latest version of the program that could have been downloaded for PCs running Windows XP/Vista/7/8/10/11, both 32 and 64-bit. The default filename for the program's installer is OpenDSS.exe. The following version: 7.6 was the most frequently downloaded one by the program users. Our built-in antivirus checked this download and rated it as virus free.
From the developer:
The OpenDSS is an electric power Distribution System Simulator (DSS) for supporting distributed resource integration and grid modernization efforts. It can define the electrical grid using text-based commands. The program can produce graphical plots of the network and various parameters like resistances, losses, etc. in each line.
You may want to check out more software, such as SecureCRT, SNMPc Network Manager or Odyssey Client, which might be similar to OpenDSS.