Résumé : vmf90 is a package to perform simulations of the Vlasov equation for mean-field systems. It currently supports the Hamiltonian Mean-Field (HMF) model and the Colson-Bonifacio model for the free electron laser. It is coded in Fortran 90 and uses HDF5 for data storage. The software is provided under the GNU General Public License version 3 and is available at http://homepages.ulb.ac.be/~pdebuyl/vmf90/