The 23.0 version of Xcast for Mac was provided as a free download on our website. Our antivirus check shows that this Mac download is safe. This free Mac app was originally developed by ALGO lab. The program lies within Audio & Video Tools, more precisely Streaming Media. The application's installation file is generally known as xcast_r23.dmg. The most popular versions of the software are 23.0 and 1.0. The bundle identifier for Xcast for Mac is com.zenonez.Xcast.
From the developer:
A free, simple yet powerful Podcast client for Mac OS X.
The explicit multi-unicast (Xcast) is a variation of multicast that supports a great number of little multicast sessions.[citation needed] It is done by adding all the IP addresses in the destination field of the IP header, instead of using a multicast address
You may want to check out more software for Mac, such as iWeb Action Pack, iFreeTV or RadioRec, which might be similar to Xcast.