huxingyi / autoremesher

Automatic quad remeshing tool

CGCookie / retopoflow

A suite of retopology tools for Blender

GeekatplayStudio / Meshwright

Know why your model won't print. Fix it. Prove it. — mesh analysis, repair and smart retopology for 3D printing, by Geekatplay Studio

openfashion-labs / ac9_cloth_retopo

Blender add-on for retopologizing CLO / Marvelous Designer garment meshes in the flat pattern shape (2D), projected to 3D on the high-poly Guide