"eti-stuff" is an attempt to understand the eti structure as defined
in ETS 300 799 for Digital Audio Broadcasting (DAB and DAB+).

eti-cmdline
is a very simplified DAB decoder that translates an incoming DAB
transmission into sequence of ETI frames.

eti-cmdline is based on the dab-cmdline software with code included
from dabtools to actually decode the eti frames.
It is - as the name suggests - a command line version.

eti-cmdline now supports a whole range of devices.

eti-backend
merely built to test somethings, reads in an ETI sequence and
interprets the data, allowing selection of a service. If decoding
an ETI stream is required, one is advised to use dablin rather than
eti-backend.