Server-side responsive images for your Rails views (similar to the picture tag)
Fork of Agris Ameriks' bounce-email
Ruby CSS Parser
Process your Paperclip attachments in the background with delayed_job or Resque.
Preflight for HTML email
Rails LTS community releases. See branch 2-3-lts.
Simple newsletter mailer for Rails
A DRb server for testing frameworks (RSpec / Cucumber currently) that forks before each run to ensure a clean testing state.
TMail is a Ruby Email Handler.