Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
Autoruns - See what programs are configured to startup automatically when your system boots and you login.
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
Autorun Organizer - Free startup manager with delay option.
Ettercap - Ettercap is a suite for man in the middle attacks on LAN.
Quick Startup - Quick Startup is an advanced startup manager to speed up your windows boot and solve the problem of slow PC system startup. It gives startup items information, reference and allows to delay auto-startup items.