Retopology is a slow process, so lets not do it more than once! SoftWrap can reutilize previous models as topology for your new models!
Compatible with Windows 7 and 10 and Linux (Tested on Kubuntu 18.04).
Its name come from how it works. A custom softbody engine plus swrinkwrap-like snapping.
These short videos should have enough information to get you started.
Its softbody simulation engine is non-physically-based and was specifically built for the purpose of retopology and contains custom dynamics that aim at giving the user control to freely manipulate the mesh while it automatically snaps onto a sculpture\scan.