The file extension refers to a compressed archive created with the free, open-source program 7-Zip .
While there is no public record of a mainstream software or project by this exact name, the naming convention suggests it is a custom archive. Based on common uses for such files, it likely falls into one of these categories:
Because "hyposleds.7z" is a specific file name rather than a widely documented topic, here is a general guide on what it likely contains and how to handle it: What is hyposleds.7z?
: Many creators use 7z to bundle high-compression game modifications or textures.
