AvailableFonts.m

NSArray *familyNames = [[NSArray alloc] initWithArray:[UIFont familyNames]];
NSArray *fontNames;  
NSInteger indFamily, indFont;  
for (indFamily=0; indFamily<[familyNames count]; ++indFamily) {
   NSLog(@"Family name: %@", [familyNames objectAtIndex:indFamily]);
   fontNames = [[NSArray alloc] initWithArray: [UIFont fontNamesForFamilyName: [familyNames objectAtIndex:indFamily]]];
   for (indFont=0; indFont<[fontNames count]; ++indFont) {
      NSLog(@"Font name: %@", [fontNames objectAtIndex:indFont]);
   }
   [fontNames release];
}  
[familyNames release];