R17 is a data mining language that's a cross between SQL and Bash. For example this

SELECT username, COUNT(1) AS num FROM users GROUP BY username ORDER BY num;

is roughly equivalent to

io.file.read('users') | rel.select(username) | rel.group(count) | rel.order_by(_count);

The most interesting difference is that each r17 clause executes concurrently :).

Download link is here: http://www.rseventeen.com/#download