Interactive 3D mesh retopology software developed as part of the publication "Instant Field-Aligned Meshes", ACM Transactions on Graphics (Proceedings of SIGGRAPH Asia, 2015). The application implements a novel approach to remesh a surface into an isotropic triangular or quad-dominant mesh using a unified local smoothing operator that optimizes both the edge orientations and vertex positions in the output mesh. The algorithm produces meshes with high isotropy while naturally aligning and snapping edges to sharp features. WWW: https://igl.ethz.ch/projects/instant-meshes/