I am trying to find a bluetooth packet sniffer to capture bluetooth signals from close by devices. I would like for this application to work on mac osx. I have had difficulty finding anything at all so my requirements are low right now - something that shows signal strength and mac address would be a good start.
Actually, Xcode does not include the bluetooth utilities by default. You need to open Xcode, go to Xcode>Open Developer Tool>More developer tools, then login with your Apple developer account, search for the “Additional Tools” and download the package for your version of Xcode. It includes an app called PacketLogger.
Prior to Xcode 8, this package was named "Hardware IO tools".
If you want the new tools to appear in Xcode's developer tools menu, drag them to the Xcode.app/Contents/Applications folder.