Nipper
Nipper - Neat Internet Protocol Packet EditoR - is a graphical packet generation tool.
17 Alternatives To Nipper
Advanced IP Scanner
Advanced IP Scanner shows all network devices, gives you access to shared folders, and can even remotely switch computers off. Download it Free.
Angry IP Scanner
Open-source and cross-platform network scanner designed to be fast and simple to use
Charles
HTTP proxy / HTTP monitor / Reverse Proxy
Fiddler
Fiddler is a debugging program for websites.
GPING
GPING (Graphical Ping) is a powerful utility that pings and graphs multiple hosts simultaneously…
Ixchariot
Instant performance assessment of complex networks from pre- to post-deployment.
MASSCAN
This is the fastest Internet port scanner.
Multiping
Get MultiPing Support. Network monitoring in 60 seconds. MultiPing provides a graphical view of network performance, monitors hundreds of targets, and sends automatic alerts..
Nmap
Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
PRTG
PRTG Network Monitor is a network monitoring and infrastructure management tool. It lets network administrators monitor devices such as access points, routers and switches. Read more about PRTG.
Packet Editor
Packet Editor a free packet editing tool to debug winsock based network solutions.
PsPing
PsPing is a command-line utility for measuring network performance.
Scapy
Scapy is a powerful interactive packet manipulation program.
SmokePing
Smokeping is a tool for measuring latency.
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.
Zenmap
Zenmap is the official cross-platform GUI for the Nmap Security Scanner.
iperf
A TCP, UDP, and SCTP network bandwidth measurement tool