PolyVR is a scene authoring system for engineering applications. It packs common virtual reality features like clustering, tracking and scenegraph operations as well as advanced features like interactive offscreen websites on any geometry using the chromium embedded framework, the bullet physics engine, the whole world generated using OpenStreetMap data (in development), mechanics simulation, a molecule generator (from string definitions) and much more. PolyVR comes with a graphical user interface to ease the authoring of complex virtual scenes and worlds. Logik can be scripted using Python and shader written in GLSL. The authoring process is dynamic, no need to stop the scene, every change applies instantly. This is also true for the hardware configuration dialogs which allows for easy deployment and calibration of distributed visualization setups. No need for complex config files and system restart for every change.