A searchable database of paper airplanes, with video tutorials
Foldable Flight is a database of more than a hundred paper airplane designs, each with a video tutorial for folding it. My kids love paper airplanes and are always trying to make new ones that fly crazier and faster, so this is great.
What makes it more than a list is the filtering. You can sort by folding difficulty, from very easy to expert, by plane type (dart, glider, stunt, jet), by designer, and by paper size. Every plane gets rated on speed, glide and accuracy, which turns picking one into a small design conversation: do you want something that rips across the room, or something that hangs in the air?
Some of these are serious. One design held the world record for time aloft at 31.2 seconds, and a number of others came from kids who won the site's design contest. It's a nice reminder that the people pushing the craft forward include a lot of young folders.