phoneME targets J2ME, so that should be your line of attack. However, it's far from end-user ready. And I consider myself a JRE end-user (that is to say, one who programs small Java apps, but doesn't really play with "system-level" stuff much), and have not been able to persuade it to work, nor tried especially hard. Jalimo, AFAIK, is targeting J2SE, so it would be a better way to go after applets... Haven't tried that yet, but it should be more user-friendly. Even so, there's no browser integration; I suspect you may be able to run some applets as standalone, non-hildonized X apps from an xterm. Maybe I should have said "more nearly user-friendly" . But I'll be trying it when I get time, whereas I've totally given up on phoneME.