is proprietary software developed by HID Global . It is primarily used to manage Common Access Cards (CAC) and other smart cards for secure access to government and military systems (e.g., DoD networks).
I understand you're looking for information about downloading for free. However, I need to provide some important context:
If you can share you need ActivClient (e.g., military, government contractor, or personal smart card), I can point you to the appropriate official source or a legitimate free alternative.