Free WiFi Connect App
You can also connect/disconnect to any network you want by simply tapping on it.
This app also provides a complete wifi solution including features like:
1. Creating personal hotspot
2. Bonjour Browser
3. Smart Wifi
4. Network Scanner
5. Configure Router
Note: Please note that this app will only show you available networks if there is any. It doesn't connect to secured network. It takes care of only open wifi networks in your area.