If you’ve been interested in testing out Ruby on Rails then head over to RailsPlayground.com and sign up for your free account. The service includes 20MB disk space, 500MB bandwidth, 1 free MySQL database and 1 free PostgreSQL database and no ads on your free site.
09/21/2005 - Update from the RailsPlayground blog:
Since we have had such an overwhelming response we have decied to stop taking new accounts for now. We hope to offer free accounts again in the near future.
They now have sandbox accounts for $12 per year.