A pure Ruby implementation of a gem 'consistent_company' that is a Ruby C Extension. Since C-extensions are not really supported in JRuby, for some JRuby users like me, here is an alternative if you want to use 'consistent_company' gem. It takes a Company Name string and replaces it with a normalized compressed version. The replaced name is not for human consumption, but for comparing other similar names to find matches.
gem install consistent_company_ruby
A namer method is added to the string class.
>> require 'consistent_company_ruby'
=> true
>> 'First Federal Savings'.namer
=> '1STFEDERALSAVINGS'
See LICENSE for further details.