WolvenKit is an open-source modtool for any game that uses redENGINE (version 3 or 4). Including Cyberpunk 2077 and The Witcher 3: Wild Hunt.
Originally called W3Edit written by Sarcen, WolvenKit is the open-source (GPLv3) windows/Linux GUI editor that is the workhorse for beginner and advanced modders.
Features of WolvenKit:
Asset Management: Includes an Asset Browser that allows users to navigate and search all game files without needing to "uncook" or extract the entire game.
File Editing: Features an RTTI-based file editor capable of inspecting and modifying any REDengine4 files, including in-place buffer data.
Import/Export Tools: Allows for native conversion of game assets (like meshes and textures) into standard formats (example: PNG) for editing in external software like Blender and any photo editor that can produce PNG files, and then importing them back into the game.
World Editing: Provides tools for native world edits, including a 3D preview mode for placing objects, NPCs, and adjusting scene hierarchies.
Mod Packaging: Facilitates the entire workflow from browsing game files to building and packaging the final mod for distribution if so wished.