  This paper introduces a catalog of gravitational waveforms from the bank of
simulations by the numerical relativity effort at Georgia Tech. Currently, the
catalog consists of 452 distinct waveforms from more than 600 binary black hole
simulations: 128 of the waveforms are from binaries with black hole spins
aligned with the orbital angular momentum, and 324 are from precessing binary
black hole systems. The waveforms from binaries with non-spinning black holes
have mass-ratios $q = m_1/m_2 \le 15$, and those with precessing, spinning
black holes have $q \le 8$. The waveforms expand a moderate number of orbits in
the late inspiral, the burst during coalescence, and the ring-down of the final
black hole. Examples of waveforms in the catalog matched against the widely
used approximate models are presented. In addition, predictions of the mass and
spin of the final black hole by phenomenological fits are tested against the
results from the simulation bank. The role of the catalog in interpreting the
GW150914 event and future massive binary black-hole search in LIGO is
discussed. The Georgia Tech catalog is publicly available at
einstein.gatech.edu/catalog.
