Community supported Spree Payment Method Gateways.
These can be used with Spree 1.0.x (but see note below for necessary changes)
http://guides.spreecommerce.com/payment_gateways.html
In your Gemfile:
gem 'spree'
gem 'spree_gateway', :git => 'git://github.com/spree/spree_gateway.git', :branch => "1-1-stable" # make sure to include after spree
Note: If you are not using the latest Spree, please consult the Versionfile at the root of the repository to determine which branch to use.
Then run from the command line:
$ bundle install
$ rails g spree_gateway:install
Finally, make sure to restart your app. Navigate to Configuration > Payment Methods > New Payment Method in the admin panel and you should see that a bunch of additional gateways have been added to the list.
Be sure to bundle your dependencies and then create a dummy test app for the specs to run against.
$ bundle
$ bundle exec rake test app
$ bundle exec rspec spec
Copyright (c) 2011 Spree Commerce, released under the New BSD License