Kitérő is a tool allowing a user to choose the output interface and the associated QoS that should be used to route her packets. It contains a daemon issuing commands to configure the router, a web service and a web interface using this service providing an API to let a user chooses her interface and QoS.

The user will point her browser to the IP address of the router and will be presented a simple interface allowing to choose the interface that should be used to route her packets and the associated QoS.

The documentation can be built with python setup.py build_sphinx.

Facebook published a similar tool: Augmented Traffic Control. You may want to look at it. However, only one output interface can be used (it only handles QoS).