By coincidence there are a couple of other Erlang autoformatters under development at the moment:

- rebar3_fmt: https://github.com/AdRoll/rebar3_format - offers lots of config options, as opposed to steamroller which has very few.

- erlfmt: don't think this has been released yet. It's designed to (probably) only change whitespace, as opposed to steamroller which makes minor code improvements.

An exciting time for Erlang developer tools!