Some big multi platform applications might have their own spell checkers, others as kmail make use
of a standalone spell checker as aspell that is a replacement for ispell. There is also myspell. Just
emerge the missing spell checkers as emerge aspell-it, emerge aspell-de, emerge aspell-en. If you have set
the LINGUAS variable in /etc/make.conf
than all languages defined there
will be installed by emerging aspell.