- Quill - http://www.quill.org http://www.quill.org Quill is a free web application that provides interactive English grammar lessons. We have built 30 hours

- Quill - http://www.quill.org http://www.quill.org Quill is a free web application that provides interactive English grammar lessons. We have built 30 hours of lessons (www.quill.org/lessons), and we currently have 5,000 students using our site. The site is built in Ruby on Rails. All of our outstanding issues are at: https://github.com/empirical-org/Compass/issues?state=open https://github.com/empirical-org/Compass/issues?state=open There are a variety of issues, from small bug fixes to major features. If you're interested in the project, please reach out to me at peter@quill.org.