Chris Wellons’ blog post explains in detail how he collected his pokerware wordlists. In essence the default “formal” wordlist comes from formal publications whereas the alternative“slang” wordlist collects popular words from Reddit comments.
EFF wordlist copyright (C) 2016 EFF, released under CC BY 3.0 US.
xkpwgen-react copyright (C) 2018 Sebastian Wiesner
xkpwgen-react is licensed under Apache License, Version 2.0.