It includes:
Self-extracting SDK installer for developers on Windows, 5/30/2013, v 8.0.42, 26776 kb
Download old versions
Note: When you buy a license, there is no need to download this package again, just replace the evaluation license keys with the purchased ones.
You need to get trial license keys to start the evaluation process. This link will explain how to do it.
This is a start page for tech questions - here you can find quick starts, FAQs, documentation, forums, etc.
When you have used the demo to make sure that Upload Suite ideally meets your requirements, go here to get a full license.