| Class | Rating | Complexity | Lines of code |
|---|---|---|---|
| WPCaptcha_Functions | 193 | 1,030 | |
| WPCaptcha_AJAX | 106 | 337 | |
| WPCaptcha_Setup | 86 | 405 | |
| WPCaptcha_Utility | 49 | 450 | |
| WPCaptcha_Admin | 41 | 382 | |
| WPCaptcha_Captcha | 19 | 123 | |
| wf_flyout | 18 | 112 | |
| WPCaptcha | 16 | 94 | |
| WPCaptcha_Tab_Captcha | 13 | 201 | |
| WPCaptcha_Tab_Login_Form | 9 | 233 | |
| WPCaptcha_Tab_Firewall | 7 | 175 | |
| WPCaptcha_Stats | 7 | 33 | |
| WPCaptcha_Tab_Activity | 6 | 86 | |
| WPCaptcha_Tab_Design | 4 | 33 | |
| WPCaptcha_Tab_GeoIP | 1 | 55 | |
| WPCaptcha_Tab_Temporary_Access | 1 | 8 |