Can someone De-confuse me?

MPWebservice, iPimp, TV4Home????????????????

Firstly, can someone explain what these do and why there are so many different ones?

Secondly can any of them do (or will be able to in the future) the below:

Situation: I would like to stream my live TV from the TV server to other clients. These clients don't necessarily run MP. As an example, I want to run Win 7 MC on an underpowered atom tablet and because 7MC loads much quicker than MP does (and because of limited tablet resources) I would like to use 7MC as the tv client. I would preferably like to transcode the stream so as not to strain the tablet too much and so I can watch the HD channels over wi-fi (RTSP streaming is no good for HD channels in my situtation).

I can see that there are alot of dedicated developers working on the streaming and it would very exciting for one solution that can stream to all devices (phones, tablet, laptops, etc) over LAN and WAN.

Thanks for your time