NETWORK SERVICE ASSURANCE AND SECURITY
Omnipacket makes it easy to build, send, receive, modify, analyze, and filter network packets

Flowcoder is an interactive WYSIWYG network programming tool. It allows building and decoding packets for a variety of network protocols, sending them on the wire, receiving and analyzing incoming network traffic, matching requests and replies, keeping and changing the state, etc.

Safepcap is a scriptable composer/editor for network packets. Allows programmatically generate test and verification pcap files from scratch.

Proofreader is a scriptable packet analyzer. It warns about possible malformed packets and allows easy programmatic pcap analysis with Python.