Bluetooth SIG has discontinued Bluetooth Developer Studio

[tellg]

See https://www.bluetooth.com/download-developer-studio 

BDS is no longer available for download, so those using BDS should backup their BDS installer.

[jmr]

Sad, sad, so sad they are discontinuing development on this tool.
Do you (or anyone here) know of any alternatives to this tool?
Possibly even with the ability to verify implementations using the PTS dongle?