Tracker is an image and video analysis package and modeling tool that is built upon the Open Source Physics Java code library. Features include object tracking with position, velocity and acceleration overlays and graphs, special effect filters, multiple reference frames, calibration points and line profiles for analysis of spectra and interference patterns. It is designed to be used in introductory college physics labs and lectures.
Tracker can overlay simple dynamic particle models on a video clip. In a typical video modeling experiment students capture and open a digital video file, calibrate the scale, and define appropriate coordinate axes just as for traditional video analysis. But instead of tracking objects with the mouse, students define theoretical force expressions and initial conditions for a dynamic model simulation that synchronizes with and draws itself on the video. The behavior of the model is thus compared directly with that of the real-world motion. Tracker uses the Open Source Physics code library so sophisticated models are possible. Video modeling offers advantages over both traditional video analysis and simulation-only modeling.
Publisher’s description
What is Tracker?
Tracker by Open Source Physics is open-source Windows software in the science & maths category. It is written in Java.
Installation and requirements
The publisher provides EXE installers for 64-bit Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 6.3.4, released on March 26, 2026. The version history goes back to July 12, 2025: 3 releases, all linked to the official files.
Popularity and file types
The source code on GitHub (OpenSourcePhysics/tracker) has 320 stars. On Windows it registers 2 file types, including .trk and .trz. Similar programs include Stellarium, KiCad and Quarto.
Project description on GitHub: “Video analysis and modeling tool built on the Open Source Physics framework”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Tracker is an open-source science & math tool for 64-bit PCs. Administrators can deploy it unattended.
Is Tracker safe to download?
- The file is served by physlets.org; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
8CAE6297ECCFCE8B5A13A4648F17842F77A9FDA5982F76505C7D9786546C1F83· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 3 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 6.3.4Latest | March 26, 2026 | — | 64-bit EXE |
| 6.3.2 | July 28, 2025 | — | 64-bit EXE |
| 6.3.1 | July 12, 2025 | — | 64-bit EXE |
Install from the command line
Silent install ›winget install --id OpenSourcePhysics.Tracker -eTracker-6.3.4-windows-x64-installer.exe --mode unattended --unattendedmodeui noneRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask osp-trackerInformation
- Publisher
- Open Source Physics
- Category
- Science & maths
- Licence
- GPL-3.0
- Price
- Free
- Source code
- github.com/OpenSourcePhysics/tracker
- Written in
- Java
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE
- Version
- 6.3.4
- Released
- March 26, 2026
- Added to the catalogue
- July 12, 2025
- Versions listed
- 3
- GitHub stars
- 320
- GitHub forks
- 75
- Website
- opensourcephysics.github.io
- winget ID
- OpenSourcePhysics.Tracker
File types it opens (2)
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Tracker free?
Yes. Tracker is open-source software under the GPL-3.0 licence.
Is Tracker safe to download?
The download comes from physlets.org; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Tracker with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Tracker be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Tracker run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Tracker?
The versions page lists all 3 versions with links to their official installer files, back to July 12, 2025.
What are alternatives to Tracker?
Stellarium, KiCad, Quarto, Qalculate! and JASP. The alternatives page compares them.
