- PhysicsWeb.org has a large list of physics applets.
- Paul Falstad has an excellent collection of math and physics applets.
- Physics resources The-Science-Lab is a directory of physics related websites.
- The very popular soda constructor lets you make 2D stick figures that move realistically. There is a page on how it works.
- An excellent online paper titled Examination of Chaos in Multiple Pendulum Systems Through Computer Visualization in Java has some very nice simulations that show the development of chaos in a pendulum.
- Syracuse University Physics has some interactive Java simulations including an interesting Gravity Simulation.
- "Really" is a PC program that creates a virtual 2d world, simulating complex objects.
- ExploreScience.com has several nice physics simulations, created with Shockwave.
- Mississippi State University has a collection of links to physics simulations from around the world.
- mathengine provides commercial software for physics simulations used in video games, engineering and academics.

- Eric Weisstein's World of Mathematics is an extensive encyclopedia of information.
- KaBoL is a "cool math site of the week" service provided by the Canadian Mathematical Society.
- The Math Forum @ Drexel University provides many math resources including the popular Ask Dr. Math and the Math Forum Internet Mathematics Library
- The Journal of Online Mathematics supports getting interesting math onto the web.
- mathpuzzle.com has some fun recreational math.
- Differential Equations and Oscillations (including the pendulum) are explained by the folks at NACSE, the Northwest Alliance for Computational Science and Engineering.

- Bad Movie Physics exposes what's wrong with all those crash and explosion scenes.
- Eric Weisstein's Treasure Troves of Science is encyclopedia-like in scope.
- HyperPhysics "is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation."
- Lagrangian and Hamiltonian Mechanics an introduction by Marek Rychlik.