The CEBAF Test Package (CTP), a set of analysis tools for nuclear physics data acquisition systems, has been developed. This package allows an analysis code to receive parameter settings, cuts definitions, and histogram definitions through ASCII files loaded at run time, or through a remote procedure call interface. These tools, modeled very loosely on the LAMPF Q test, histogram and dynamic parameter packages, allow one to change the parameters of data analysis without stopping and recompiling the data acquisition system. CTP includes a variable registration system that allows the same variable names to be used in the data acquisition system and in the definition files.