.Karabiner-VirtualHIDDevice-Manager 3.1 for Mac is available as a free download on our software library. Our built-in antivirus checked this Mac download and rated it as 100% safe. The most recent setup file that can be downloaded is 27.7 MB in size. The actual developer of this free Mac application is Takayama Fumihiko.
From the developer:
Karabiner-DriverKit-VirtualHIDDevice is a virtual device implementation for macOS using DriverKit. Once the app is installed, you can go to System Preferences and select the virtual HID keyboard. The tool also provides you with an extension manager, a virtual HID pointing, and a virtual HID device client.