These are the open source Bluetooth 4.0 Smart APPs, including Bluetooth Low Energy and Classic BR/EDR. Check out these in BCSphere client for Android/iOS, include standard GATT profiles like FindMe, as well as proprietary for TI cc2540/cc2541 sensorTag, Dialog 14580 Bluetooth Serial Port/SPP, Smartwebee Bumblebee BLE starter kit etc. It also support Arduino like development kits, such as Microduino.
www.bcsphere.org - Bluetooth 4.0 LE, Bluetooth Smart iOS/Android Apps developers site.