NavStax creates avionics software for flight simulation, designed to make virtual flying more realistic and immersive. Its products replicate the functionality and appearance of real-world aviation equipment for Microsoft Flight Simulator X and Prepar3D, with support for Prepar3D versions 3, 4, and 5 stated on the site.

The flagship KINGNAV Avionics Suite bundles six navigation and communication gauges: a KMA 30 audio panel, KX 165A and KX 165 NAV/COMM radios, KN 62A DME, KR 87 ADF, and KT 74 transponder. The gauges feature detailed textures, animation, and custom programming, and can be used as 2D pop-ups or, where the aircraft supports integration, as 3D virtual-cockpit gauges. Functions include programmable radio channels, navigation modes, frequency selection, timers, altitude monitoring, and flight ID display. The suite is offered as a single package for $24.99 USD.

NavStax also provides aircraft developers with a free software development kit containing gauge models, textures, and integration code to support 3D compatibility. Its products run within the simulator and are not standalone applications for a separate computer.