OpenDNS DNSCrypt Proxy

dnscrypt-proxy - A tool for securing communications between a client and a DNS resolver

Cisco Umbrella

Cisco Umbrella is a cloud security platform that provides the first line of defense against threats on the internet.

HackerOne

HackerOne provides a platform designed to streamline vulnerability coordination and bug bounty program by enlisting hackers.

Norton ConnectSafe

Norton ConnectSafe is a free service that adds a level of security to your PC, laptop, tablet, gaming console or mobile device. The program acts as a first line of defense during internet browsing.

NxFilter

Best performance. You don’t want to slow down your network by installing a network security software. NxFilter is a light-weight DNS filter. It doesn’t cause any latency issue in your network.

Quad9

Quad9 is a free, recursive, anycast DNS platform that provides end users robust security protections, high-performance, and privacy.

ScoutDNS

ScoutDNS is a powerful DNS content filter solution that protects your network from ever increasing internet threats. Affordable and Easy to Use.