This is SuperMemo 8 for Windows 3.1 (build: 8.46, 1.05MB, 16-bit).
This software is a collector's item. Unless you still use Windows 3.1, you will rather prefer newer freeware versions.
You can download and start using the program immediately. You will yet need an unlock password that will be sent to you within a business day.
Important! This software is freeware, and is retained at this site as a collector item only.
By ordering any of Freeware, you instantly qualify for Freeware Upgrade to newer versions.
If you would rather avoid the hassle of placing an order, go to freeware sites, and download there. For example see: SuperMemo at Freewarefiles.com