| Name | Lines of code | Maintainability | Test coverage |
| language/english/admin.php | 53 | F 3 days | |
| config/config.php | 55 | A 0 mins | |
| send.php | 57 | A 0 mins | |
| class/Contact.php | 59 | A 0 mins | |
| language/english/main.php | 59 | A 0 mins | |
| index.php | 61 | A 0 mins | |
| blocks/block_contact_form_map.php | 73 | A 2 hrs | |
| language/german/modinfo.php | 86 | F 6 days | |
| language/english/modinfo.php | 89 | F 6 days | |
| class/Common/VersionChecks.php | 90 | B 4 hrs | |
| admin/blockform.php | 108 | A 2 hrs | |
| language/english/common.php | 126 | F 2 wks | |
| language/german/common.php | 126 | F 2 wks | |
| include/onupdate.php | 127 | D 1 day | |
| admin/main.php | 129 | A 0 mins | |
| class/Common/SysUtility.php | 130 | C 1 day | |
| class/Common/FilesManagement.php | 138 | B 6 hrs | |
| class/ContactHandler.php | 299 | C 1 day | |
| xoops_version.php | 319 | A 3 hrs | |
| admin/blocksadmin.php | 500 | F 5 days |