| Name | Lines of code | Maintainability | Test coverage |
| utils/method_piping.rb | 14 | A 35 mins | |
| utils/midi_file_reader.rb | 47 | A 2 hrs | |
| utils/osc.rb | 225 | A 3 hrs | |
| utils/osc_server.rb | 44 | A 35 mins | |
| utils/path.rb | 37 | A 50 mins | |
| utils/reloadable_require.rb | 61 | A 1 hr | |
| utils/sample_player.rb | 33 | A 45 mins | |
| utils/sdl_application.rb | 119 | A 2 hrs | |
| utils/settings.rb | 46 | ||
| utils/struct_stack.rb | 21 | ||
| utils/value_animation.rb | 89 | B 4 hrs | |
| utils/value_animation_states.rb | 35 | ||
| utils/vector3.rb | 90 | A 3 hrs | |
| utils/video_file/extconf.rb | 5 | ||
| utils/video_file/ffmpeg.rb | 27 | A 35 mins | |
| utils/webcam/extconf.rb | 7 | ||
| utils/webcam/video4linux2.rb | 19 | ||
| utils/zaml.rb | 245 | A 35 mins |