We review recent progress in the application of numerical relativity
techniques to astrophysics and high-energy physics. We focus on some
developments that took place within the "Numerical Relativity and High Energy
Physics" network, a Marie Curie IRSES action that we coordinated, namely: spin
evolution in black hole binaries, high-energy black hole collisions, compact
object solutions in scalar-tensor gravity, superradiant instabilities and hairy
black hole solutions in Einstein's gravity coupled to fundamental fields, and
the possibility to gain insight into these phenomena using analog gravity
models.This is the final version of the article. It first appeared from World Scientific via https://doi.org/ 10.1142/S021827181641022