  Since the seminal work of Dawson and Perkins, mutually catalytic versions of
super-processes have been studied frequently. In this article we combine two
approaches extending their ideas: the approach of adding correlations to the
driving noise of the system is combined with the approach of obtaining new
processes by letting the branching rate tend to infinity. We introduce infinite
rate symbiotic branching processes which surprisingly can be interpreted as
generalized voter processes with additional strength of opinions. Since many of
the arguments go along the lines of known proofs this article is written as a
review article.
