What's the best option for searching in Ruby on Rails?
There are several plugin options for building a search engine into your Ruby on Rails application.  Which of these is the best?

  - [Thinking Sphinx][1]
  - [UltraSphinx][2]
  - [Sphincter][3]
  - [acts_as_sphinx][4]
  - [acts_as_ferret][5]
  - [Ferret][6]


  [1]: http://ts.freelancing-gods.com/
  [2]: http://blog.evanweaver.com/files/doc/fauna/ultrasphinx/files/README.html
  [3]: http://seattlerb.rubyforge.org/Sphincter/
  [4]: http://www.datanoise.com/articles/2007/3/23/acts_as_sphinx-plugin
  [5]: http://projects.jkraemer.net/acts_as_ferret/
  [6]: http://ferret.davebalmain.com/trac/
What's the best option for searching in Ruby on Rails?
===

There are several plugin options for building a search engine into your Ruby on Rails application.  Which of these is the best?

  - [Thinking Sphinx][1]
  - [UltraSphinx][2]
  - [Sphincter][3]
  - [acts_as_sphinx][4]
  - [acts_as_ferret][5]
  - [Ferret][6]


  [1]: http://ts.freelancing-gods.com/
  [2]: http://blog.evanweaver.com/files/doc/fauna/ultrasphinx/files/README.html
  [3]: http://seattlerb.rubyforge.org/Sphincter/
  [4]: http://www.datanoise.com/articles/2007/3/23/acts_as_sphinx-plugin
  [5]: http://projects.jkraemer.net/acts_as_ferret/
  [6]: http://ferret.davebalmain.com/trac/