Fedachparser is a project mainly written in Ruby, it's free.
download, parsing and storing of Fed ACH data
The Federal Reserve maintains a list of financial institutions participating in the ACH network. Write code which downloads their list of institutions, parses out the information, and stores it in a database. The code only needs to support downloading and storing all of the entries. Bonus points for using Ruby and writing tests.
I only parsed 2 fields out of file but let me know if you would like to see more. I can parse them all if necessary.