There are many tools for RPA ( Robotic Process Automation )
Scopes of works and software abilities are different as they are running on platforms, engines, web browsers, or continuous processes of information.
For web applications and security concerns, most of the customers selected web-browser based applied working rules that can be monitored and updated follow by their policy and user friendly but some advanced users may try to integrate with local scripts, metadata, and databases. Some program Java based is free but they need to run on the target engines as services and communications for multiple node monitoring when Windows provided monitoring tools and messages tools ( JAVA | Windows base )
The answer should target the audience I provided a list of robots for process automation when they are working on different expectations and responses if you looking for web-based test tools Google Robots Frameworks is a good tool with GUI and scripts.
Best Regards,
Jirayu Kaewprateep