UESVON is a little project I worked on in the summer, to investigate some 3D navigation techniques.
It's based on a GDC talk by Daniel Brewer from Digital Extremes, regarding the 3D navigation solution they created for the Archwing levels in Warframe. You can read about the solution in more detail in Game AI Pro 3.
I've implemented the system as an UnrealEngine plugin. I won't go into detail regarding the usage, you can take a look at the Readme on github.
Check out the repository on Github