ideas for plugin exploration
there is a plugin section on this site, it basically pulls information from the wordpress.org plugin section on any plugin tagged “bbpress”
i’d say search the plugins section
search the forums on this site so you would find some developed plugins that are not yet on wordpress.org
check some in the list here https://codex.bbpress.org/feature-plugins-tracking/
on gist.github.com/ there are a few snippets in plugin format , especially netweb’s gists https://gist.github.com/ntwb
there are also paid plugins on sites like codecanyon
and there is always google.com