Survex is a Free Software/Open Source software package for mapping caves, licensed under the GPL . It is designed to be portable and can be run on a variety of platforms, including Linux/Unix, macOS, and Microsoft Windows.
Survex is very powerful cave survey software, and is actively developing into a complete cave visualisation package. It has a sophisticated GUI frontend.
Survex has no arbitrary limits, and so is particularly good for large complicated cave systems, or areas where you need to see the relationships between multiple cave systems. Putting existing data into it should be easy.
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UBSS: University of Bristol Spelaeological (Caving) Society
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Cave Survey Software: Create Cave Maps with CaveWhere - CaveWhere
aardgoose | aardgoose.github.io
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