  In the past years, the amount of research on active matter has grown
extremely rapidly, a fact that is reflected in particular by the existence of
more than 600 review articles on this topic. Moreover, the field has become
very diverse, ranging from theoretical studies of the statistical mechanics of
active particles to applied work on medical applications of microrobots and
from biological systems to artificial swimmers. This makes it very difficult to
get an overview over the field as a whole. Here, we provide such an overview in
the form of a metareview article that surveys the existing review articles on
active matter. Thereby, this article provides an introduction to the various
subdisciplines of active matter science and constitutes a useful starting point
for finding literature about a specific topic.
