APL@VORO is a software designed to aid in analyzing membrane simulations made with GROMACS. APL@Voro reads .pdb files and GROMACS trajectories in the .xtc/.trr formats, performs a Voronoi tesselation for a set of selected keyatoms and calculates the projected area per lipid and the membrane thickness on the Basis of Voronoi diagrams and triangulations. The calculated values and diagrams are visualized as 2D Plots and interactive graphic representations.