Filter performance of four software programs
| Program | Number of sites visited | Number blocked sites | Percentage blocked | Number not blocked | Percentage unblocked |
|---|---|---|---|---|---|
| Bess/N2H2 | 140 | 91 | 65% | 49 | 35% |
| Cyber Patrol | 130 | 41 | 31.5% | 89 | 68.5% |
| IWay Patrol | 143 | 39 | 27.3% | 104 | 72.7% |
| CYBERsitter | 129 | 13 | 10.1% | 116 | 89.9% |
| Average | 135.5 | 46 | 33.9% | 89.5 | 66.1% |