If you are looking for advanced compression and encryption features, tools like PeaZip and 7-Zip provide features beyond standard file zipping:
US Census Bureau, Department of Commerce - Dataset - Catalog
In the context of RF and handheld instruments, Anritsu provides specialized data management tools that often handle compressed trace files.
For data science and logistics, high-level ZIP Code databases include features for:
Enhances security by encrypting the file list within an archive.
Based on available technical and general databases, there is no widely documented software feature or tool specifically named
MST allows users to capture, analyze, and document spectrum and spectrogram traces.
If you can provide more context—such as the (e.g., logistics, telecommunications, coding) or where you saw the term —I can help you narrow down exactly what it refers to.