Colasoft Packet Builder
Colasoft Packet Builder is freeware which provides the ability to create custom network packets. Users can use this free tool to check their network protection against attacks and intruders. The Colasoft Packet Builder includes a very powerful editing feature. Besides common HEX editing of raw data, the free Colasoft Packet Builder features a Decoding Editor allowing users to edit specific protocol field values much easier.
