The only application available on the developer's website is SecureGuard VMS. You can download it for free by filling a form provided on the download page.
The problem is that no other information is provided or SpecoTech Multi Client. There was a link on Google that lead to the Speco's website but it changed to the SecureGuard VMS.
If you want to find more about the Multi Client, contact the developers on the official website.