This paper describes a pragmatic framework for modeling, classifying,
customizing, and combining various {\em synchronization schemes}
for object-oriented concurrent programming (OOCP in short).
This is achieved by using a general purpose OOCP
generic software architecture/platform, named Actalk.
The architecture is based on the notions of {\em components},
{\em parameterization} and {\em inheritance}.
In this paper we focus on the {\em activity component}
of an (active) object in order to express
control over acceptance and execution of method invocations.
Variations on the parameters (namely virtual methods)
of the activity component are used to describe and implement
various synchronization schemes.
At first, our platform helps in classifying and experimenting with
various synchronization schemes.
Secondly, it helps in reusing them and building-up
on previous expertise
in order to derivate enhanced or novel schemes.
To illustrate this in the paper,
we progressively develop various schemes
by successive {\em refinements} and {\em combinations},
starting from two foundational synchronization schemes
(namely {\em enabled sets} and {\em guards}).
Before concluding, we briefly discuss
some general architectural issues of
generic software platforms by comparing the design
of the Actalk architecture
to some other similar software platforms.