This guide is written from a professional automation engineer’s perspective. It covers the legal reality, the legitimate "free" options, the risks of piracy, and how to get a fully functional copy for learning. First, understand this: You cannot legally download a full, unlimited, perpetual license of InTouch SCADA for free.
Wonderware (now part of after Schneider Electric's acquisition) is a commercial industrial software. A single development license (InTouch HMI) costs between $1,500 and $10,000+ , depending on I/O tags and features.