Dev-ruby is a project mainly written in RUBY and JAVASCRIPT, it's free.
ruby-dev translation
dev-ruby provides community translation of ruby-dev, the Japanese mailing list of Ruby interpreter development.
Post
Topic
Topic caches the time of the latest mail in the tree. Topic is automatically created when new post is created. topic.last_update is automatically updated when new post is added.
Translation
TranslationRequest
User
Account
/users Create[login]
/user/:id Read Update[login] Delete[login]
/mails Index Create[admin]
/mail/:id Read
/mail/:id/request Create[login] Delete[login]
/mail/:id/translation Create[login] Update[login]