Review of uv-packer powered by the Slant community.
UV-Packer is a free, fast and exact tool for automatic packing of UV clusters. It is a one-click answer to the laborious work of sorting and compressing unwrapped polygons into UV sheets.
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Pros
Pro Optimal UV packing results
This is how boring UV automation work should look and work - one click and move on.
Pro Free
Pro Very fast, stable, supported
Pro good UI, easy to use, accessable
Cons
Con Windows only
Mac announced.