Opentrack

Free head tracking for sims and VR games

Opentrack is a practical Windows utility for turning head movement into in-game view control, mainly for flight simulators and virtual reality-style setups. Instead of being a game or a full VR platform, it acts as a bridge: it reads movement from a supported tracking source, processes that data, and sends it to compatible software using the protocol you choose.

The main screen is functional rather than modern. When a camera is active, you can see its feed, and a small on-screen octopus mirrors your head movement so you can confirm tracking is working. The app also shows raw tracker data and game-facing data, which is useful when you are adjusting a setup and want to understand what the software is receiving and sending.

Configuration is the heart of Opentrack. You choose a tracking method, such as an IR LED tracking clip or a phone-based tracker, then select the output protocol required by your game or simulator. You can also apply filtering to reduce shaky or jittery movement, with a smoothing scale available for fine-tuning. Additional settings cover areas such as camera behavior, output options, and game detection.

In daily use, Opentrack is best for users who do not mind spending some time on setup. Basic operation is straightforward once the tracker, protocol, and filter are selected, but the flexibility can feel intimidating if you are new to head-tracking tools. The interface also looks dated, so do not expect a polished consumer app experience.

Its biggest strengths are stability, customization, and cost. Because it is free and supports DIY-style hardware combinations, it can be a budget-friendly way to add head tracking to a simulator setup. The trade-off is that building or tuning a homemade tracking clip, especially with a camera such as a PS3 camera, requires patience and some technical confidence.

Opentrack is best suited to flight sim fans, VR experimenters, and PC users who want reliable head tracking without paying for a packaged hardware ecosystem.