MacPortのパッケージcrysdenをインストールしました。
https://www.macports.org/ports.php?by=name&substr=xcrysden
$ port search xcrysden Warning: port definitions are more than two weeks old, consider updating them by running 'port selfupdate'. xcrysden @1.5.60_2 (science) X-windows CRYstalline Structures and DENsities $ sudo port -v selfupdate $ sudo port install xcrysden ... ---> Building xcrysden ---> Staging xcrysden into destroot ---> Installing xcrysden @1.5.60_2+gcc6 ---> Activating xcrysden @1.5.60_2+gcc6 ... $ which xcrysden /opt/local/bin/xcrysden $ xcrysden &
