The efficient DFT-based TB methods are not restricted to "classical" DFT and to groundstate properties only. Several DFT extensions have been successfully ported into the density-functional tight-binding (DFTB) framework and implemented in various program packages. The DFTB version of those extensions (hybrid functionals 219 TDDFT, Ehrenfest dynamics, 221 Greens-function-based electron transport etc.) are typically several orders of magnitude faster than their DFT counterparts, allowing for a more efficient treatment of large systems and/or long time scales.