I have an account there (=Silicon Labs), but you need another subscription for salesforce.com to download it!
The current version of Z-Wave PC Controller (=aka Zensys-Tools) is 5.34.
I only have version 4.7 of the Zensys-tools from Aeotec support pages. And there they link to:
https://assistance.domadoo.com/file.php?id=1989 (=Version 4.7)
Does anyone have a newer version or a salesforce.com account?