IkuTurso is an Elixir library, originally meant for password strength checking.
The original idea was to implement a complex strength metric a la zxcvbn, but at some point the project stalled. Currently, it has support for querying HIBP, and some functionality for efficient bloom filter and dictionary queries. Whilst not complete, the code may be interesting for anyone wishing to implement something similar.
See the GitLab repository for the source code