Applets are very useful in mathematical explorations, so I made list of more than 8000 applets from 10 different websites and blogs below. I hope you’ll find them helpful.

- Analyze Math. Tutorials and problems with applets.
- Cut the Knot. More than 1000 Java applets. Includes content topics from Arithmetic, Algebra, Geometry, Probability, Fractals and Chaos and more.
- GeoGebra Applet Central. More than 100 GeoGebra applets and growing on K-12 Mathematics which I created together with a group of bloggers.
- Manipula Math with Java. About 300 math applets from a (Japanese-owned?) website.
- Larry Green’s Applet Page. 100+ applets written by Larry Green of Lake Tahoe Community College.
- Math, Physics and Engineering Applets by Paul Falstad
- Illuminations. More than 100 K-12 applets from NCTM.
- Interactivate. Hundreds of applets from numbers to calculus.
- PLU Applets. Java applets from arithmetic to abstract algebra from Pacific Lutheran University
- Wolfram Demonstrations. Nearly 7000 applets created with Mathematica. Some of the major categories are mathematics, computations, physical sciences, life sciences, business and social systems, systems, models and methods, creative arts, and more.
- GeoGebraTube. More than 2100 applets created with GeoGebra.