4joy is described as 'allows you to play different games which require gamepad, steering wheel, joystick or other devices. You can connect your phone via Bluetooth or Wifi (not yet available) with your PC just in one step and play in your favorite games'. There are more than 10 alternatives to 4joy for a variety of platforms, including Windows, Android, Android Tablet, iPhone and Linux. The best alternative is Monect, which is free. Other great apps like 4joy are LEA Extended Input (Freemium), Max Remote (Free), Joypad (Freemium) and Wifipad (Free).
Make the best use of sensors on smart device to control PC, simulate steering wheel, game-pad, touch-pad, Remote Desktop, file sharing, control PPT and more. Monect PC Remote is a free app that allows you to control the PC over wi-fi or bluetooth. Represent entire series of Monect games.
Features of LEA Extended Input Unlimited Freedom! To build your perfect UI choose between 13 standard controls or create your own! You can even import an unlimited number of controls shaped by the community. Fully customizable controls!
Turn your Android device into a WiFi universal remote for your computer. Control your mouse, keyboard, slide shows, video players, and your favorite games with more than 20 models of joysticks and much more all from your Android device.
WifiPad transforms your iPhone/iPod Touch into a wireless gamepad. It simulates keyboard events on a computer running the WifiPad Server over the Wifi network. It works with any games that accepts keyboard keys as input.
Kutimo is a wireless gamepad for Windows with a focus on customization. Use the controller editor to add any number of buttons and directional pads anywhere you like on your device screen. Bind up to 10 keys to a single button press using the Kutimo client on your PC.