Passage is a project mainly written in ..., it's free.
A simple webapp that mails you a line from a longer piece of text once a day.
This is just a template I'm setting up for firing up Sinatra apps quickly. You're welcome to build on it, if you like.
Authentication is handled via OmniAuth, specifically using another template I created, OmniAuth for Sinatra. You'll need OAuth keys from a third-party, like Twitter.
The app requires a file in the root directory, called 'config.rb'. This will need a few variables:
The Sanitize gem is available. Generally, this would lead to something like this to keep malicious code out of the database: post '/article' do Article.create(:body => Sanitize.clean(params[:body]), :user_id => current_user.id, :created_at => Time.now)
end