However , there are recent efforts to keep MOPAC7 working as open source software .
The latest versions are no longer public domain software as were the earlier versions such as MOPAC6 and MOPAC7 .
There are recent efforts to keep MOPAC7 working as open source software .
The latest versions are no longer public domain software as were the earlier versions such as MOPAC6 and MOPAC7 .