TS-GAUSS is a toolbox including (i) software and (ii) datasets for instant calculations of tsunami time-series for an arbitrary seismic source at pre-selected coastal locations. The toolbox exploits the concept of the surface Green's functions (Molinari et al., 2016; https://doi.org/10.5194/nhess-16-2593-2016) and consists of the two consequent steps: (1) ruptGen code to simulate initial tsunami conditions for an arbitrary seismic source and (2) code to make linear combination of the pre-computed Gaussian Green's functions. Correspondingly, TS-GAUSS toolbox also includes datasets of Green's functions for selected geographical regions to download.