The 23.0 version of Xcast for Mac is provided as a free download on our website. This free Mac app was originally developed by ALGO lab. 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. It is done by adding all the IP addresses in the destination field of the IP header, instead of using a multicast address