React is an OCaml module for functional reactive programming (FRP). It
provides support to program with time varying values : applicative events
and signals. React doesn't define any primitive event or signal, this lets
the client chooses the concrete timeline. React is made of a single,
independent, module and distributed under the new BSD license. Given an
absolute notion of time Rtime helps you to manage a timeline and provides
time stamp events, delayed events and delayed signals.