PacketSender - Network utility for sending / receiving TCP, UDP, SSL

•    C++

Packet Sender is an open source utility to allow sending and receiving TCP, UDP, and SSL (encrypted TCP) packets. The mainline branch officially supports Windows, Mac, and Desktop Linux (with Qt). Other places may recompile and redistribute Packet Sender. Packet Sender is free and licensed GPL v2 or later. It can be used for both commercial and personal use. Official releases of Packet Sender can be downloaded at PacketSender.com. Some places redistribute Packet Sender.

goscan - goscan is a simple and efficient IPv4 network scanner that discovers all active devices on local subnet

•    Go

Goscan must run as root. Goscan work in Linux/Mac using libpcap and on Windows with WinPcap.

nsupdate.info - Dynamic DNS service

•    Python

https://nsupdate.info is a free dynamic DNS service. nsupdate.info is also the name of the software used to implement it. If you like, you can use it to host the service on your own server.

netaddr - A network address manipulation library for Python

•    Python

A network address manipulation library for Python

IP Calculator

A simple and easy to use IPv4 and IPv6 subnet calculator.

Simple IP/IP Range Ping

•    DotNet

Simple IP or IP range pinger. GUI version of built in command prompt ping.

IPAddressExtensions - extending the System.Net.IPAddress class

This is a .NET 3.5 library that retrieves the country information for an Internet Protocol version 4 (IPv4) Address, by extending the System.Net.IPAddress class. The most common use for this library would be determining the destination of a user connecting to your website or ...

public-ip - Get your public IP address - very fast!

•    Javascript

In Node.js, it queries the DNS records of OpenDNS which has an entry with your IP address.In browsers, it uses the excellent icanhaz service through HTTPS.

vflow - Enterprise Network Flow Collector (IPFIX, sFlow, Netflow)

•    Go

High-performance, scalable and reliable IPFIX, sFlow and Netflow collector (written in pure Golang).You can download and install pre-built debian package as below (RPM and Linux binary are available).

ipaddr.js - IP address manipulation library in JavaScript (CoffeeScript, actually)

•    CoffeeScript

ipaddr.js is a small (1.9K minified and gzipped) library for manipulating IP addresses in JavaScript environments. It runs on both CommonJS runtimes (e.g. nodejs) and in a web browser. ipaddr.js allows you to verify and parse string representation of an IP address, match it against a CIDR range or range list, determine if it falls into some reserved ranges (examples include loopback and private ranges), and convert between IPv4 and IPv4-mapped IPv6 addresses.

hipku - Encode any IP address as a haiku

•    Javascript

A tiny javascript library to encode IPv6 and IPv4 addresses as haiku. Install with npm install hipku. index.js can also be used directly in the browser.

url-parse-lax - url.parse() with support for protocol-less URLs & IPs

•    Javascript

URL to parse.Prepend https:// instead of http:// to protocol-less URLs.

public-ip-cli - Get your public IP address

•    Javascript

Get your public IP address

internal-ip - Get your internal IP address

•    Javascript

The module returns the address of the internet-facing interface, as determined from the default gateway. When the address cannot be determined for any reason, null will be returned.The module relies on operating systems tools. On Linux and Android, the ip command must be available, which depending on distribution might not be installed by default. It is usually provided by the iproute2 package.

internal-ip-cli - Get your internal IP address

•    Javascript

Get your internal IP address

ip-regex - Regular expression for matching IP addresses

•    Javascript

Returns a regex for matching both IPv4 and IPv6.Returns a regex for matching IPv4.

ipify - Get your public IP address

•    Javascript

Using the ipify API or a custom ipify instance.Returns a Promise for the IP address.

ipify-cli - Get your public IP address

•    Javascript

Using the ipify API or a custom ipify instance.

is-ip - Check if a string is an IP address

•    Javascript

Check if input is IPv4 or IPv6.Check if input is IPv4.

network-simulator - simulate a low-level computer network

•    Javascript

Create a new simulator instance sim.Create a network node identified by a string key and an array of string interface names ifaces.