What are famous forks of the Unreal Engine?

I’ve been reading up about game engines and came across the UE4 source code. I see the EULA explicitly allows developers to fork and modify the code to create applications. I see Nvidia and Oculus have forked and extended UE4 but they’re essentially adding instead of modifying. Are there any famous forks of UE?

I’m looking to build a specialised toolkit for my requirement and UE would make the best base to build off of. Any thoughts?

For reference: I have a decent amount of experience with C++ and .Net.

I’m not aware of any famous forks that are published in the open but you might want to have a look at the sharing hub (A new, community-hosted Unreal Engine Wiki - Announcements and Releases - Unreal Engine Forums). There you will find engine changes that Epic has not merged, many of them come from actively maintained forks. Another option would be to browse the complete list of forks directly on GitHub (https://github.com/EpicGames/UnrealEngine/network/members).

RyanTorant’s AHR is the only one I’m familiar with. There aren’t any famous ones I know of what are you after?

The mentioned fork: https://github.com/RyanTorant/UnrealEngine