Naven
The US Children's Online Privacy Protection Act lets industry groups apply to the Federal Trade Commission to run Safe Harbor programmes. A company that joins one is reviewed against the programme's guidelines, which must give children at least the protection COPPA does, and the programme handles complaints and discipline before the FTC is involved.
No government agency certifies COPPA compliance directly. A company describing itself as "COPPA certified" either belongs to a Safe Harbor programme, which it should name, or is using a word it is not entitled to.
Where Naven stands
Naven belongs to no Safe Harbor programme and claims no certification. It describes what it does for each COPPA requirement — verified parental consent before an under-13 account can send, deletion when consent does not arrive, a parent's right to review and delete — on its compliance page instead.
