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Wget is an update to the age old wget HTTP downloader tool. With a contemporary feature set this brings wget to 2018 with a blast.
Unfortunately wget2 is not yet available easily for macOS (formerly known as Mac OS X), using brew or other similar packet managers. You can, however compile wget2 from source. See the instructions on the wget2 repo for guidelines for building wget2 on macOS for details.
Terse example below:
brew install automake install gettext lzip pkg-config xz brew link --force gettext ./configure make make check sudo make install (or su -c "make install")