Copycopter is a hosted service for copywriters to edit copy in live Ruby on Rails apps.
Instead of directly changing the text of HTML headings, paragraphs, lists, buttons, links, etc., web developers use Rails’ i18n (internationalization) API to set default text. Then, any team member, particularly true copywriters, uses Copycopter to change the live copy in staging or production without asking for a re-deploy of code.
There is a 30-day free trial, and plans run from $9/month to $49/month.