oPhysics
oPhysics: A free web collection with broad physics coverage, 3D simulations, quizzes, and lab activities. Ranked #58 of 89 in Physics Simulation Software by our editors (3.2/10); pricing: Free plan; best for free browser simulations with quizzes and 3D.
At a glance
- Editor score3.2 / 10
- PricingFree plan
- Best forFree browser simulations with quizzes and 3D
- Free planYes
- Paid fromFree
- Delivery modeWeb
- Facts checked20 Sep 2026
Where it wins
- Covers major physics topics with adjustable simulations
- Adds 3D visuals, laboratory activities, tutorials, and quizzes
- Includes graphing plus mechanics and circuit diagram tools
Where it doesn't
- Web access is required
- Does not include authoring tools
- Does not provide offline access or data export
Our verdict on oPhysics
oPhysics is a free, browser-based collection of interactive physics simulations for students and educators. Its coverage includes kinematics, forces, conservation, waves, light, electromagnetism, rotation, fluids, and modern physics. The site also offers laboratory activities, tutorials, quizzes, practice activities, graph creation, and tools for drawing mechanics or circuit diagrams. Content was created by Tom Walsh, a retired high-school and AP Physics teacher, and is offered for non-profit educational use.
The main strength is the combination of breadth and interaction. Learners can adjust parameters with sliders, input fields, and other controls, then explore physics concepts through two-dimensional and three-dimensional simulations. The built-in quizzes and practice activities add assessment alongside the lesson library, while laboratory-style activities support a more structured learning path. Educators looking for browser-based materials across several physics units can use the range of topics without moving between separate products.
The product is a focused learning resource rather than a course-authoring or data-analysis platform. It does not provide authoring tools, offline access, or data export, so it is less suitable for educators who need to create custom simulation activities, work without an internet connection, or move results into another system. Those limitations matter more in managed instructional environments than in individual study. Choose oPhysics for free web access to adjustable simulations, 3D visuals, quizzes, and practice activities; choose an alternative when authoring, offline delivery, or export is central to the workflow.
Your product? Our editors can test oPhysics in depth and publish a review, labelled as paid · from $149/mo →
oPhysics pricing
oPhysics fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Delivery mode | Web |
| Lesson library | Yes |
| Authoring tools | No |
| Assessment tools | Yes |
| 3D visuals | Yes |
| Offline access | Not verified |
| Data export | Not verified |
| Deployment | Cloud |
| Platforms | Web |
| Support | |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | ophysics.com |
| Facts checked | 20 Sep 2026 |
Alternatives to oPhysics
- COMSOL MultiphysicsA broad desktop environment for coupled physics, engineering models, and custom simulation apps.9.4
- Ansys FluentA deep CFD and HPC environment for demanding industrial simulation work.9.3
- SimScaleA broad browser-based multiphysics platform with flexible cloud workflows and tiered access.9.1
See all oPhysics alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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