| Name | Lines of code | Maintainability | Test coverage |
| lib/Formatting/MultimediaUtility.php | 265 | F 3 days | |
| lib/Template.php | 267 | F 6 days | |
| lib/Ideas/Idea.php | 270 | D 2 days | |
| lib/Notifications/Notification.php | 279 | F 4 days | |
| lib/Forums/Forum.php | 279 | F 4 days | |
| lib/Images/Exif.php | 291 | F 4 days | |
| lib/Events/Event.php | 291 | F 5 days | |
| lib/Images/Provider/Flickr.php | 304 | F 4 days | |
| lib/Images/Utility/CompetitionUtility.php | 306 | F 4 days | |
| lib/Locations/Locations.php | 324 | F 5 days | |
| lib/Forums/Thread.php | 336 | F 5 days | |
| lib/Downloads/Download.php | 369 | F 1 wk | |
| lib/AppCore.php | 396 | F 1 wk | |
| lib/BanControl/BanControl.php | 404 | F 1 wk | |
| lib/Forums/Post.php | 405 | F 5 days | |
| lib/Locations/Location.php | 417 | F 6 days | |
| lib/Place.php | 419 | F 1 wk | |
| lib/Railcams/Camera.php | 423 | F 1 wk | |
| lib/Images/Utility/Finder.php | 430 | F 1 wk | |
| lib/Locos/Locos.php | 472 | F 1 wk | |
| lib/News/Article.php | 543 | F 1 wk | |
| lib/Locos/LocoClass.php | 590 | F 1 wk | |
| lib/Forums/Forums.php | 648 | F 1 wk | |
| lib/Locos/Locomotive.php | 649 | F 1 wk | |
| lib/Images/Competition.php | 654 | F 1 wk | |
| lib/Images/Image.php | 823 | F 2 wks | |
| lib/Users/User.php | 1,132 | F 2 wks |