| Name | Lines of code | Maintainability | Test coverage |
| lib/highline/terminal.rb | 102 | A 0 mins | |
| lib/highline/list_renderer.rb | 171 | A 3 hrs | |
| examples/page_and_wrap.rb | 174 | A 0 mins | |
| lib/highline/style.rb | 188 | B 6 hrs | |
| lib/highline/menu.rb | 253 | B 6 hrs | |
| lib/highline/question.rb | 257 | C 7 hrs | |
| lib/highline.rb | 318 | D 2 days |