| Name | Lines of code | Maintainability | Test coverage |
| src/model/GlobalConfig.php | 195 | B 5 hrs | A 96% |
| src/model/Request.php | 195 | A 3 hrs | C 77% |
| resource/js/tab-hierarchy.js | 251 | D 2 days | |
| resource/js/vocab-search.js | 325 | B 7 hrs | |
| src/controller/WebController.php | 387 | D 2 days | F 20% |
| src/model/Model.php | 419 | F 3 days | B 82% |
| src/model/Vocabulary.php | 429 | F 3 days | B 85% |
| src/model/VocabularyConfig.php | 494 | F 3 days | A 95% |
| src/model/Concept.php | 654 | F 1 wk | B 83% |
| src/controller/RestController.php | 882 | F 1 wk | F 22% |
| src/model/sparql/GenericSparql.php | 1,655 | F 2 wks | A 92% |