If you are looking for a legitimate copy for vintage computing or data recovery, here are the current archival sources:
Q: Is IBM Lotus SmartSuite Millennium still supported by IBM? A: No, IBM Lotus SmartSuite Millennium is no longer officially supported by IBM. If you are looking for a legitimate copy
A Personal Information Manager (PIM) that many still consider the best "digital day-planner" ever made. Understanding Versions 9.8.1 to 9.8.6 no forced updates
No modern app quite replicates the "leather-bound planner" feel and ease of use found in Organizer. If you are looking for a legitimate copy
For the best experience, run it on a VM using Windows XP or Windows 7.
SmartSuite has no telemetry, no forced updates, and no cloud dependency. For air-gapped systems or privacy-focused users, it’s absolute.