You must run Multiwfn from within its own directory or add it to your system PATH. Use cd C:\Multiwfn_3.8 first.
. No formal installation is required, though adding the folder to your system's environment variables is recommended for command-line access. macOS/Linux
Multiwfn on Google Drive (Often used if the main site is slow). Operating Systems Supported: Windows: 64-bit and 32-bit versions (binary executable).
As of the 3.8 release, the following packages are typically offered: