This paper discusses the design and usage of a Simulink-based phasor measurement unit (PMU) simulator package. The simulator and PMU data is available upon request from the first author. The motivation for developing the package is to provide a flexible environment for teaching phasor measurement and frequency estimation to advanced undergraduate and graduate students, and providing a knowledge base to students for research. This software allows for the exploration of the algorithms and phenomena involved in the phasor estimation process. The package is built on the Simulink platform and is able to process simulated signals as well as measured point-on-wave data. The popularity and relevance of the proposed package is evaluated using formal questioners Ver menos