refaudit finds public functions and types in a repository (like this one) that are not used in other repositories. It was made to answer this question:
What is in this package that is exported but not used?
- Install with 
go install github.com/launchdarkly-labs/refaudit@latest. - Clone all the repos you need to audit.
 - Run this tool with 
refaudit. Run it without args to get usage info.