https://cygwin.com/cygwin/packages/summary/libgtkhex3_0.html
Cygwin Package Summary for libgtkhex3_0
cygwinpackagesummary
https://www.mirrorservice.org/sites/sourceware.org/pub/cygwin/x86_64/release/ghex/libgtkhex3-devel/
Index of /sites/sourceware.org/pub/cygwin/x86_64/release/ghex/libgtkhex3-devel