Icecast, Nicecast, and SHOUTcast are examples of audio streaming servers that can provide listener statistics for audience measurement.
Demographic and psychographic information cannot be easily collected due to geographically diverse nature of typical Internet radio audiences.
The statistics collected from those users is then projected against the estimated 52 million actual Internet radio listeners.
[5] StreamAnalyst is a web-based service (SaaS) that generates audience statistics reports for Internet radio and other streamed contents.
[6] NeuroMedia Software, also offer CasterStats,[7] a cloud based analytics as well as an on-premises version that can combine audience of podcasts and also radio on TV.