Pretty much everything is there except gtk (yet) and hildon based programs. This unfortunately rules out pidgin currently. Other things I miss from N900 are Cisco VPN support, Conboy, Office Communicator and of course hw keyboard. N900 is a much better all around device currently.

IMHO only reasons moving to N9 are speed, style and swipe ux. I haven't given up on N900 as my work phone.