HTTrack is the well-known (I think) website mirroring tool. Uses a slightly non-standard build/install that doesn't read $CFLAGS, won't compile with emake, and won't allow a simple "make install" to install it. However I think I worked around the install issues generically enough by examining the makefiles and reimplementing the install using ebuild commands.
Created attachment 3930 [details] httrack-3.20.ebuild
Bouncing back to bug-wranglers due to time constraints.
already added it to portage (different bug)