The developers of UV-Packer plug-in for 3ds Max, Unreal Engine 5, and Blender have released Packer-IO, which takes the same functionality and puts it in a standalone application, making it possible to use with other 3D software and game engines.
Optimized for contemporary workflows and designed to cater to the needs of 3D artists of any kind and industry, including photogrammetry and architectural visualization, Packer-IO streamlines the tiresome process of packing and organizing UV maps with just one click, dealing with high-poly assets and thousands of UV clusters with ease.
Packer IO is also resolution-independent. The space between UV clusters is calculated correctly and exactly distributed over all charts, creating equal distances between all UV clusters without overlapping.