HammUEr by NT Entertainment - Itch.io
nte.itch.io › hammuerHammUEr is a Windows only plugin for Unreal Engine 4 (and as soon as a stable version is out, 5) that lets you build your levels with any level editing tool that supports the formats designed for Valve's Hammer map editor (VMF), Doom3's DoomEdit (MAP/PROC) or an idTech2-3(Quake 1-3 and assorted other games that use the engine with varying levels of success and no guarantee of perfect imports ...