  We present abstract inhomogeneous Strichartz estimates for dispersive
operators, extending previous work by M. Keel and T. Tao on the one hand, and
generalising results of D. Foschi, M. Vilela, M. Nakamura and T. Ozawa on the
other hand. It is shown that these abstract estimates imply new inhomogeneous
Strichartz estimates for the wave equation and some Schr\"odinger equations
involving potentials.
