If you are a student, a freelancer, or an engineer setting up a standalone workstation, you don't need to pay for a license.
The version is free to download and use. It provides the essential "RSLinx Classic" interface that looks like a tree structure, allowing you to see the IP addresses of your CompactLogix or ControlLogix processors and verify that your cable is connected properly. rslinx classic lite download
Rockwell software is not typically hosted on third-party "freeware" sites. To ensure you are getting a clean, virus-free copy, always download directly from the source. If you are a student, a freelancer, or