OOMMF magnetoelastic extension incorporates the magnetoelastic energy to micromagnetic simulations with OOMMF (Object-Oriented Micromagnetic Framework). The extension provides additional Oxs extensible classes, in which you can specify the elastic strain or the displacement along with the magnetoelastic coefficients. Spatially-nonuniform, time-varying strain can be specified either with Tcl scripts or file lists and the effective magnetoelastic field and energy is computed at each simulation step.