  We study the addition of flavor to the gravity dual of N=4 three-dimensional
gauge theories obtained by wrapping $N_c$ D4-branes on a two-cycle of a
non-compact Calabi-Yau two-fold. In this setup the flavor is introduced by
adding another set of D4-branes that are extended along the non-compact
directions of the Calabi-Yau which are normal to the cycle which the color
branes wrap. The analysis is performed both in the quenched and unquenched
approximations. In this latter case we compute the backreacted metric and we
show that it reproduces the running of the gauge coupling. The meson spectrum
and the behavior of Wilson loops are also discussed and the holographic
realization of the Higgs branch is analyzed. Other aspects of this system
studied are the entanglement entropy and the non-relativistic version of our
backgrounds.
