W3C Link Checker is an automated web crawler and indexing bot (Validator).
| Operator | W3C |
|---|---|
| Category | Validator |
| User Agent | Platform | Device |
|---|---|---|
| W3C-checklink/5.0.0 libwww-perl/6.36 | Unknown | Unknown |
| W3C-checklink/4.81 libwww-perl/6.15 | Unknown | Unknown |
| W3C-checklink/4.81 libwww-perl/6.04 | Unknown | Unknown |
| W3C-checklink/4.81 libwww-perl/5.836 | Unknown | Unknown |
| W3C-checklink/4.5 [4.160] libwww-perl/5.823 | Unknown | Unknown |
| W3C-checklink/4.5 [4.154] libwww-perl/5.823 | Unknown | Unknown |
| W3C-checklink/4.3 [4.42] libwww-perl/5.820 | Unknown | Unknown |
| W3C-checklink/4.3 [4.42] libwww-perl/5.808 | Unknown | Unknown |
| W3C-checklink/4.3 [4.42] libwww-perl/5.805 | Unknown | Unknown |
| W3C-checklink/4.2.1 [4.21] libwww-perl/5.803 | Unknown | Unknown |
| W3C-checklink/4.2 [4.20] libwww-perl/5.803 | Unknown | Unknown |
| W3C-checklink/4.0 [4.4] libwww-perl/5.803 | Unknown | Unknown |
| W3C-checklink/3.6.2.3 libwww-perl/5.64 | Unknown | Unknown |
| W3C-checklink/2.90 libwww-perl/5.64 | Unknown | Unknown |
| W3C-checklink/5.0.0 | Unknown | Unknown |