Flipnote Studio
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Could be interesting
Get it all together with the Personal Organizer! A phone book, a day planner, and a calendar all in one. Store up to 90 names and phone numbers. Keep track of appointments and events with the built-in day planner, and find dates up until the year 2000 with the built-in calendar. Also featured is a complete listing of the most often used 800 numbers, a world clock with over 75 cities, a fully functioning calculator and a notepad.
A web browser for the Nintendo DS that runs on Opera 8.5