Colasoft Packet Builder
Colasoft Packet Builder 22.214.171.124 can be downloaded from our software library for free. This program is an intellectual property of Colasoft LLC. The latest installation package occupies 14.8 MB on disk. The software belongs to Internet & Network Tools. Our antivirus analysis shows that this download is malware free.
From the developer:
Colasoft Packet Builder enables creating custom network packets; users can use this tool to check their network protection against attacks and intruders. Colasoft Packet Builder includes a very powerful editing feature. Besides common HEX editing of raw data, it features a Decoding Editor allowing users to edit specific protocol field values much easier.
You may want to check out more software, such as Colasoft Packet Player, Colasoft nChronos Server Free or Colasoft Capsa Professional, which might be similar to Colasoft Packet Builder.