DXVK - Vulkan-based D3D11 implementation for Linux / Wine
JoyToKey - JoyToKey enables users to control the keyboard using any USB compatible controller (Dualshock 3, Xbox 360, etc.)
DXUP - A D3D10 -> D3D11 Translation Layer
Pinnacle Game Profiler - Pinnacle Game Profiler enables the use of virtually any game controller (gamepad, joystick, etc.) with any PC game. It's preconfigured for most game titles and controllers. Just download and play.
Direct3D 9-to-11 - Direct3D 9 to Direct3D 11 converter.
AntiMicro - A tool for mapping keyboard and mouse events to gamepads and joysticks.