Links to other collections of science interactives. Get ready to get lost in more lists.
If any links are broken, let me know.

Explorable Explanations
A collection of Explorable Explanations curated by Nicky Case.

Astro Apps
Collection of interesting astronomical and cosmological simulations, created by Haus der Astronomie.

The Physics Classroom
Sets of pages with lessons and interactives about a variety of physics topics.

Index of Simulations
A spreadsheet pulled together for teachers of a categorized list of hundreds (wait, thousands!) of simulations you can find online, sorted by topic. An incredible resource organized by Helen Reynolds.

The Falstad Collection
Collection of small simulations created by Falstad.

PhET
The definitive collection of free online resources for physics classes. Run by University of Colorado Boulder.

JavaLab
Just an amazing trove of science simulations built by middle school teacher, DJ Lee. I’m amazed at how much is covered here.

Academo Collection
A collection of small open source physics simulations, created by Academo.

Tesseralis
Set of simulations and explorables about math, created by Nat Alison.

Red Blob Games
A variety of interesting lessons, simulations, and explorables about topics in math, physics, and programming. Created by Amit Patel.

A Free Particle Interactives
A set of Desmos simulations covering a wide range of physics including many about mechanics – an excellent resource for teachers and students. Created by Michael Freeman.

myPhysicsLab
Lots of small simulations of things like pendulums and springs, where you can easily change the values, too. By Erik Neumann.

Ricky Reusser Collection
A lot of cool interactive math-y explorables to check out. Created by Ricky Reusser.

Fowler’s Physics Applets
Collection of small physics simulations, many including nice explanations. Built by Michael Fowler.

oPhysics
A large set of interactive physics simulations built by Tom Walsh. Covers a wide range of physics, including forces, waves, and light.

Concord Consortium List
A collection of science interactives by Concord Consortium.

Universe & More
A collection of interactive physics resources that are fun and easy to use. By Matthew Blackman.

ScienceGameCenter
THE definitive list of science games – both digital and physical. Curated by Dr. Melanie Stegman.

PBS Learning Media
Collection of various science learning resources hosted by PBS LearningMedia. Covers topics such as physics, biology, and geology.

Dan Schroeder Physics Educational Software
Physics education software created mostly by Dan Schroeder, some excellent simulations in here.