| Name | Lines of code | Maintainability | Test coverage |
| src/Middlewares/SessionMiddleware.php | 112 | B 5 hrs | |
| src/Request.php | 93 | A 1 hr | |
| src/Response.php | 146 | A 35 mins | |
| src/Response/EmptyResponse.php | 11 | A 0 mins | |
| src/Response/HtmlResponse.php | 12 | A 0 mins | |
| src/Response/JsonResponse.php | 33 | A 0 mins | |
| src/Response/RedirectResponse.php | 21 | A 0 mins | |
| src/Response/TextResponse.php | 12 | A 0 mins | |
| src/Response/XmlResponse.php | 12 | A 0 mins | |
| src/ServerRequest.php | 102 | A 45 mins | |
| src/Sessions/CacheSessionHandler.php | 71 | A 0 mins | |
| src/Sessions/CookieSessionHandler.php | 104 | A 25 mins | |
| src/Stream.php | 179 | A 25 mins | |
| src/Traits/MessageDecoratorTrait.php | 84 | A 0 mins | |
| src/UploadedFile.php | 71 | A 35 mins | |
| src/Uri.php | 217 | B 6 hrs |