| w3c | 0.44 | 0.3 | 6031 | 3 | 38 |
| w3c validator | 1.39 | 0.7 | 6614 | 13 | 66 |
| w3champions | 1.05 | 0.3 | 9354 | 11 | 68 |
| w3c html | 0.92 | 0.1 | 8384 | 8 | 84 |
| w3c markup validation service | 0.22 | 0.4 | 5767 | 29 | 76 |
| w3c form | 1.42 | 0.1 | 4985 | 8 | 74 |
| w3c python | 1.38 | 0.3 | 8445 | 10 | 49 |
| w3c css validation | 1.97 | 0.2 | 1054 | 18 | 83 |
| w3c sql | 1.37 | 0.8 | 8320 | 7 | 74 |
| w3c standards | 1.69 | 0.5 | 9849 | 13 | 51 |
| w3c validator css | 1.2 | 1 | 3134 | 17 | 52 |
| w3c link checker | 1.64 | 0.2 | 2056 | 16 | 41 |
| w3c accessibility | 1.65 | 0.1 | 4490 | 17 | 8 |
| w3c javascript | 0.94 | 0.2 | 1499 | 14 | 31 |
| w3c meaning | 1.65 | 0.8 | 758 | 11 | 56 |
| w3c html validator | 1.94 | 0.2 | 297 | 18 | 13 |
| w3c xml | 1.03 | 0.3 | 3965 | 7 | 24 |
| w3c svg | 0.46 | 0.5 | 1588 | 7 | 72 |
| w3c js | 0.58 | 0.1 | 9566 | 6 | 66 |
| w3c validation service | 0.7 | 0.1 | 8537 | 22 | 1 |
| w3code | 1.6 | 1 | 5512 | 6 | 5 |
| w3c markup validation | 0.95 | 0.7 | 1906 | 21 | 49 |
| w3c verifiable credentials | 1.56 | 0.8 | 7983 | 26 | 20 |
