  MONKES is a new neoclassical code for the evaluation of monoenergetic
transport coefficients in stellarators. By means of a convergence study and
benchmarks with other codes, it is shown that MONKES is accurate and efficient.
The combination of spectral discretization in spatial and velocity coordinates
with block sparsity allows MONKES to compute monoenergetic coefficients at low
collisionality, in a single core, in approximately one minute. MONKES is
sufficiently fast to be integrated into stellarator optimization codes for
direct optimization of the bootstrap current and to be included in predictive
transport suites. The code and data from this paper are available at
https://github.com/JavierEscoto/MONKES/
