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FFI::Aspell is an FFI binding for the Aspell library. It was mainly written as Raspell, a C binding for Aspell, is buggy and no longer maintained by the main author as of April 2012.


  • Ruby 1.9.3 or newer
  • Aspell
  • Aspell language packs for your used language(s)

For running the tests the following language packs are required:

  • Dutch: aspell-nl
  • English: aspell-en
  • Greek: aspell-el

Aspell can be installed as following:

  • Arch Linux: sudo pacman -S aspell
  • Ubuntu: sudo apt-get install aspell libaspell-dev
  • OS X: brew install aspell --with-lang-en --with-lang-el --with-lang-nl
    • If you have homebrew installed to somewhere other than /usr/local (such as /opt/boxen/homebrew for Boxen users), you may have to simlink the library file like so:
sudo ln -s $(brew --prefix)/lib/libaspell.dylib /usr/local/lib/libaspell.dylib


Install the gem:

gem install ffi-aspell

Load it:

require 'ffi/aspell'

The primary class is FFI::Aspell::Speller, this class can be used to check for spelling errors and the likes:

speller ='en_US')

if speller.correct?('cookie')
  puts 'The word "cookie" is correct'
  puts 'The word "cookie" is incorrect'


You can use to avoid having to call #close explicitly:'en_US') do |speller|
  puts speller.correct?('cookie')

For more information see the YARD documentation.


All source code in this repository is subject to the terms of the Mozilla Public License, version 2.0 unless stated otherwise. A copy of this license can be found the file "LICENSE" or at