Nefarius Software Solutions e.U.

Nefarius Software Solutions e.U. is a small Austrian software outfit (the “e.U.” indicates an Einzelunternehmen / sole proprietorship) best known in the PC gaming and input-device community for creating and maintaining tools and drivers that enable virtual and filtered HID/gamepad functionality on Windows. The author/maintainer publishes code, installers and driver packages that allow emulation of controllers, user-space interaction with HID devices, and selective hiding of input devices from applications. Their most recognizable projects include the ViGEm (Virtual Gamepad Emulation) ecosystem — including ViGEmBus and updater tools — and HidHide, a utility to hide physical controllers from certain applications (useful for preventing duplicate device inputs in gaming and streaming scenarios).

The vendor operates primarily through open-source channels and community distribution (GitHub repositories, releases, and community forums) and is active in maintaining Windows kernel-mode drivers...