DNS Angel , it will protect your family from inappropriate websites and will Block them Automatically it is Freeware and Portable

The best Internet Filter alternative to K9 Web Protection is LeechBlock, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to K9 Web Protection and 14 are Internet Filters so hopefully you can find a suitable replacement. Other interesting Internet Filter alternatives to K9 Web Protection are Plucky, Qustodio Parental Control, Cold Turkey and Cisco Umbrella.
DNS Angel , it will protect your family from inappropriate websites and will Block them Automatically it is Freeware and Portable

ApateDNS™ is a tool for controlling DNS responses though an easy-to-use GUI. As a phony DNS server, ApateDNS spoofs DNS responses to a user-specified IP address by listening on UDP port 53 on the local machine. ApateDNS also automatically sets the local DNS to localhost.