- IETF has mainly ALTO and P2PSIP working groups but also P2P streaming is pushing "on the market."
- DVB recently released an Internet TV questionnaire which has some P2P aspects.
- W3C had some P2P activity in the past but now it seems to be silent with respect to this topic. Maybe the situation changes in the future...
- MPEG provides the baseline technologies (codecs and file formats) but also started an exploration activity towards an Advanced IPTV Terminal (AIT), probably jointly with ITU-T.
Let me know in case something is missing or wrong.