It is proprietary software developed by Rockwell Automation. The "Lite" version is free to use but requires a proper installation from Rockwell's official channels.
Consequences include:
RSLinx Classic Lite is the free communication server software from Rockwell Automation, used primarily to link Allen-Bradley controllers to programming software like RSLogix Version 2.59 rslinx classic lite 259 download free portable
The Persistent Demand for RSLinx Classic Lite: Analyzing the "Free Portable" Phenomenon and Industrial Realities It is proprietary software developed by Rockwell Automation