Kyle has put together a library of 109 paper airplane designs at Foldable Flight, each with step by step folding instructions. The planes are sorted by paper type, and clicking one opens its fold sequence.

Designs are rated on a 1 to 10 scale for speed, glide and accuracy, plus a difficulty level from Very Easy up to Expert. So a dart like Ballista scores 10 for speed and 2 for glide, while gliders like Palladium and Sienna go the other way.

Some of the designs have records behind them. Unite holds the world record for time aloft at 31.2 seconds, one prototype on the site flies over 300 feet, and tutorials for the Arrowhead have been viewed more than 100 million times. Others come from readers, including grand prize winners of the site’s 2025 paper airplane contest and designs credited to folders like Evan Brus, Zhang Renjie and Michael LaFosse.

See more at foldableflight.com. Via Hacker News.