Internal:
Calendar+: better calendar plugin (free);
Wisbar Lite: fast acssess to programs menu ($)
Wm5torage: treo as a pendrive (free);
Macromedia Flash Player: plugin (free);
PdaNet: use 700wx as a modem ($)
GPRS Traffic Monitor: data traffic control ($)

SD:
Documents to Go for SmartPhone: works on treo (pre-release)
PDA CookBook Lite: recipes ($)
NoteM: good mp3 stereo voice recorder (free)
RepliGo
Destinator: good maps & rotes ($)
SlovoEd: portugues<->ingles dictionary ($)
RoadLingua: portuges<->portugues, portugues<->ingles tech e ingles->portugues de expresions dictionaries ($)
TCPMP: the best video player
Spb Insignt: rss
Spb Finance: financial control ($)
Sprite Backup: backup (free to treo 700wx)
SmartFlash: flash player (free)
PHM Registry Editor: registry editor (free)
Opera 8.6: browser ($)
M?tro: (free)
HandyShopper: shopping list (free)