WG is a word generator with several useful options you can use to filter/reduce the output list of words. It is available in three implementations, one written in Erlang, one in Perl, and one in Ruby.
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The first official Erlang port was added. The Perl version is a just a script. The Ruby version is more complicated but more scalable and needs other software to be installed, like a Stomp server. The Erlang release is more like the Perl version, but is faster because it can use all cores or CPUs of your computer system.