WinMOPAC 2.0 that could have been downloaded from our website for free. The actual developer of the free software is Roman Shchepin. The program lies within Business Tools, more precisely Project Management.
From the developer:
WinMopac is a powerful tool for semi empirical calculations of chemical molecules. This program has unified old DOS version MOPAC7 with some improvements which we have made and a convenient windows interface, and an integrated external molecular viewer(RasWin). The Windows interface includes all editing functions, a setting menu and some other features.
You may want to check out more software, such as ManagePro, which might be similar to WinMOPAC.