To accelerate development of devices and services for the Internet of Things, the Bluetooth SIG has launched a Bluetooth Developer Studio.
The drag-and-drop interface isn’t a traditional IDE, per se, but more a means to quickly design what you want from your product. There are also several existing products that can be forked to fit your specific needs.
Bluetooth Developer Studio has tools that will auto-generate code based on your design, which are meant to work with specific hardware from third-party manufacturers. It also lets you create plug-ins for use with apps, which can be tested in a virtual environment or on physical devices.
For specific use-cases, Bluetooth Developer Studio is a good jumping-off point. If you want to get started, the SIG is hosting an introductory webinar on the 29th.