*Takin* is a software package for inelastic neutron scattering which features a full GUI, but can also be used as a library. It can be employed for [lattice and scattering plane visualisation](Basic-Usage), triple-axis and time-of-flight spectrometer [resolution calculation](Resolution-Calculation), planning of measurements using a live [convolution preview](Resolution-Convolution), and [convolution fitting](Convolution-Fitting).