Numerical relativity has come a long way in the last three decades and is now
reaching a state of maturity. We are gaining a deeper understanding of the
fundamental theoretical issues related to the field, from the well posedness of
the Cauchy problem, to better gauge conditions, improved boundary treatment,
and more realistic initial data. There has also been important work both in
numerical methods and software engineering. All these developments have come
together to allow the construction of several advanced fully three-dimensional
codes capable of dealing with both matter and black holes. In this manuscript I
make a brief review the current status of the field.Comment: Report on plenary talk at the 17th International Conference on
General Relativity and Gravitation (GR17), held at Dublin, Ireland, july
2004. Latex, 20 pages, 5 figure