Repositories:

Debian and Ubuntu

CuteCW: (amd64 stable, armhf [like rpi] beta)
wget -O - https://bits.sigpipe.me/repos/debian/cutecw/keyring.gpg | sudo apt-key add -
# add in /etc/apt/sources.list.d/cutecw.list:
deb https://bits.sigpipe.me/repos/debian/cutecw/ cutecw main
# Do and update and install package
apt-get install cutecw