VSSX file stores colection of shapes. This format is used by Microsoft Visio software. Initially Visio was a stand-alone tool, but after Microsoft bought Visio company in 2000, it is distributed as a part of Microsoft Office suite. The tool is actively developed, and VSSX format is still popular.

Visio allows users to create clear schemes and diagrams based on real-time data. VSSX files are used as containers for created drawings that can be used in various projects.