Skyteam
Aeromexico, Airfrance, KLM, Alatilia, Continental, Korean, NWA, DAL, TSA
Star
Air Canada, New Zealand, ANA, Thai, Asiana, BMI, Austrian, LOT, SAS, Lufthansa, Singapore, Spanair, TAP, USAir, Varig
These folks are not STAR but will allow the use of miles. They would be up for grabs with Jetblue. I know that Swiss tried on more then one occasion to get into Oneworld but were turned away.
Aeromar, Air China, Aloha, BWIA, Emeriates, South African, Swiss
Oneworld
Aer Lingus, JAL, Malev, Cathay, AA, BA, Finair, Iberia, Qantas, LAN
The other ones that come to mind would be
Jamaican (works with DAl but not partner), Air India, Saudia, Aeromar, Air China, Aloha, BWIA, Emeriates, South African, Swiss, Aeroflot
The above list would provide more then enough feed for Jetblue.
What would concerns me more is if Jetblue could work out an alliance with EasyJet or Ryan. What happens when one of these folks figures out how to connect across the Atlantic?
A company like Jet(India's LCC) which is flying A340's or Air India could easily drop hundreds of Indians on Jetblues door at JFK every day.
Their is plenty of alliance market share for someone like Neelman to grab.
Jet, Ryan