Open Source Physics review
A broad, free toolkit for physics teaching, modeling, analysis, and simulation authoring.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Open Source Physics (OSP) is an educational project and collection of related tools for physics educators, students, researchers, and authors creating computational or simulation-based learning activities. It combines ready-to-run Java and JavaScript simulations with modeling, authoring, video analysis, data analysis, and curricular resources. Its hybrid delivery model includes web access, desktop platforms, and mobile platforms, with offline access available as part of its feature set.
OSP’s strongest distinction is the depth of its authoring and analysis toolkit. EJS supports physics modeling with minimal programming, while LaunchBuilder helps users edit and package curricular materials. Tracker adds video analysis and particle modeling, and Data Tool works with XML and CSV datasets. The platform also includes ODE solvers, fields, plots, custom visualizations, a three-dimensional drawing framework, and the ability to save simulation states and curricular data as XML. This makes it suitable for users who need more than ready-made simulations and want to create or adapt learning activities.
The breadth is useful for institutions and educators building varied physics materials, but it also means OSP is not a single-purpose simulator with one streamlined workflow. Users may need to choose among several tools and become familiar with different file formats, programming environments, and authoring approaches. Those seeking a broad, free, open-source environment for teaching, modeling, experimentation, and curriculum development should consider OSP. Users who want a narrowly focused simulator or a unified commercial application may prefer a more specialized alternative.
Open Source Physics pros and cons
- Where it wins
- Free, open-source toolkit with simulation and authoring capabilities
- Combines EJS, LaunchBuilder, Tracker, Data Tool, and 3D visuals
- Available across web, Windows, macOS, Linux, iOS, and Android
- Where it doesn't
- Multiple tools and formats can create a steeper learning path
- Java, JavaScript, XML, and CSV workflows may require technical familiarity
- Its broad project structure may not suit users seeking one focused workflow
Open Source Physics fact sheet, pricing and score →
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