domineaux,

For ustream and livestream, you are correct they do have their own software but you are not forced to use it. Most software like wirecast, vidblaster, OBS, vmix, xsplit broadcaster and many more can setup a stream to both ustream and livestream. Don't feel like you have to use their software.

Almost all of the CDN's have a free option but it normally includes adding in advertising to your stream. Some only at the beginning and others even throughout. Ustream's free option will play an ad in the beginning and will display banner ads on the bottom and in the middle of your stream it will cut in and play an ad. Very annoying.

Youtube live is free and a great option. Also check out dailymotion as an option. I have been streaming with them for just over a week and it is pretty nice.

I did an episode on Church Technology last week about streaming services, granted it was designed for churches and has one or two that are specific services for churches but it covers most of the well known ones: http://tech-zen.tv/episodes/shows/ch...rmon-episode-4