Speaking about the client side, QuaerO uses to their fullest the native components of the host system, that's why new development environments have been adopted any time it was necessary (Xcode for the worls of Apple, Eclipse for Android…).
As for the server side, QuaerO has been developed with the help of the .NET technology in order to reside in the Microsoft server. The platform integrates different ways to access the data: besides the usual Odbc and Oledb, SAP Connector v.3 (a standard component of SAP) is available to make connections with SAP R/3 via standard or custom calls. There's also a driver available that can be adapted to the requirements of the client in order to access the data of the proprietary or less famous systems.
The notification system works thanks to the integration of the Notification Center or via SMS and STMS protocols.