Multiwfn 3.8 Download =link= Official

The official site provides MD5 or SHA256 sums for each file. After downloading, compute the hash:

Ensure you have your .wfn , .wfx , .fchk , or .molden files ready for analysis. Why Version 3.8? multiwfn 3.8 download

The official server might be temporarily down. Use the mirror from the developer’s GitHub (unofficial but safe): The official site provides MD5 or SHA256 sums for each file