VAMPIRE is a state-of-the-art atomistic simulator for magnetic nanomaterials. This software is the culmination of five years of continuous development, with an aim to make atomistic simulation of magnetic materials routinely available to the nonspecialist researcher. Before now, using atomistic models to simulate magnetic systems required in depth and technical knowledge of the underlying theoretical methods, computer programming skills and the ability to debug and understand intricate computational problems. The code is designed with ease of use in mind, and includes an extensive set of input parameters to control the simulations through a plain text input file. Subject to future funding it is also hoped to develop graphical user interfaces for MacTM OSXand WindowsTM which should make using the code more accessible.