| Name | Lines of code | Maintainability | Test coverage |
| includes/html/collectd/functions.php | 673 | F 1 wk | |
| includes/functions.php | 688 | F 5 days | |
| scripts/removespikes.php | 696 | F 1 wk | |
| includes/polling/bgp-peers.inc.php | 706 | D 2 days | |
| includes/polling/ports.inc.php | 716 | D 1 day | |
| LibreNMS/OS/Timos.php | 756 | F 1 wk | |
| resources/views/layouts/menu.blade.php | 784 | D 1 day | |
| app/Models/Device.php | 798 | F 5 days | |
| LibreNMS/service.py | 802 | F 5 days | |
| lang/de/settings.php | 808 | F 4 days | |
| lang/zh-CN/settings.php | 822 | F 4 days | |
| LibreNMS/IRCBot.php | 824 | F 1 wk | |
| includes/html/functions.inc.php | 891 | F 6 days | |
| includes/polling/applications/cape.inc.php | 943 | F 2 wks | |
| resources/views/map/custom-edit.blade.php | 1,018 | D 2 days | |
| lang/zh-TW/settings.php | 1,018 | F 5 days | |
| includes/discovery/functions.inc.php | 1,131 | F 2 wks | |
| lang/fr/settings.php | 1,149 | F 1 wk | |
| lang/uk/settings.php | 1,581 | F 2 wks | |
| lang/it/settings.php | 1,598 | F 2 wks | |
| lang/en/settings.php | 1,761 | F 1 wk | |
| includes/html/collectd/definitions.php | 1,971 | F 3 wks | |
| includes/html/api_functions.inc.php | 2,685 | F 1 mo |