Here is brief description about
knocker.biz- A hinged fixture,such as a metal ring or bar,used for knocking on a door.
- A simple and easy to use TCP security port scanner written in C to analyze hosts and all of the different services started on them.
- The Welsh and Cornish equivalent of Irish leprechauns and English and Scottish brownies.
- A British radio situation comedy broadcast on digital radio station BBC 7.