What is the Overstream Studio
Overstream Studio is a desktop application that allows you to place additional animated widgets on top of your videostream, such as a ticker, participant information, teamplay score, current time, starting list table and logos.
Every streaming software that supports browsers can use the Overstream Studio application, like OBS Classic and Studio, StreamStudio OBS and XSplit. Just paste a widget's URL from a browser to your streaming software and adjust its size.
More details on how to work with the program can be found in the documentation.