  We present Version 3.0 of the GLoBES (``General Long Baseline Experiment
Simulator'') software, which is a simulation tool for short- and long-baseline
neutrino oscillation experiments. As a new feature, GLoBES 3.0 allows for
user-defined systematical errors, which can also be used to simulate
experiments with multiple discrete sources and detectors. In addition, the
combination with external information, such as from different experiment
classes, is simplified. As far as the probability calculation is concerned,
GLoBES now provides an interface for the inclusion of non-standard physics
without re-compilation of the software. The set of experiment prototypes coming
with GLoBES has been updated. For example, built-in fluxes are now provided for
the simulation of beta beams.
