- The Origami Databases is a massive collection with over 33,000 origami diagrams and over 2000 book titles. You can search for models, search for books, or have items listed alphabetically. Searches may be slow due to the extensive amount of stored information.
- The database by Gilad has over 2,500 origami books, magazines and other publications, covering over 40,000 designs (about a quarter of them with pictures).
- Alex Barber’s origami site has an easy to use search engine. You can search for origami models based on difficulty level (simple, intermediate or complex). It’s a great starting point for finding free online origami diagrams.
- Niels has a small but growing database of 250+ models.