TMAP3D grew out of some experimentation with WebXR - an emerging standard (already replaced by OpenXR I think) which lets you create fully immersive 3D spaces which can be entered via the browser on a compatible VR headset (like the Oculus Quest), crucially without having to download any app to the headset. This really opens the way to wider authoring and access to VR spaces.
With TMAP3D the application starts by loading Regina subsector. You can move around it, click on worlds to see UWP and PBG data (bases and trade classifications to come), bring up gas giant and belt icons, and see Zones and allegiance. You can then choose how you want the vertical dimension to be used (fixed, population, tech level, importance, starport), and the world size (diameter, population, tech level, importance).
Once you've had your fill of Regina select Atlas form the menu, select a Sector (a 5×5 grid currently supported, core and trailing from Spinward Marches), and then a subsector and the new subsector dynamically loads from the Traveller Map API.
There is a video walkthrough of the application at: https://www.youtube.com/watch?v=NfnAVowrgug
To access with a VR headset:
Any bugs/comments email me at firstname.lastname@example.org or post on my blog page for the app at https://newconverj.blogspot.com/2020/12/gdw-traveller-map-in-vr3d.html
Functionality in an ordinary browser is limited at the moment, I'll improve it during 2021.