  While the radio detection of cosmic rays has advanced to a standard method in
astroparticle physics, the radio detection of neutrinos is just about to start
its full bloom. The successes of pilot-arrays have to be accompanied by the
development of modern and flexible software tools to ensure rapid progress in
reconstruction algorithms and data processing. We present NuRadioReco as such a
modern Python-based data analysis tool. It includes a suitable data-structure,
a database-implementation of a time-dependent detector, modern browser-based
data visualization tools, and fully separated analysis modules. We describe the
framework and examples, as well as new reconstruction algorithms to obtain the
full three-dimensional electric field from distributed antennas which is needed
for high-precision energy reconstruction of particle showers.
