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.

WebGnuru Simple Subnet Calculator

•    PHP

This is a PHP driven web application which accepts user input of an IP address and a subnet mask, and then returns the network address, broadcast address and range of usable IP addresses based on the input.

IP Calculator

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

IPNetwork utility computes your netmask, cidr, subnet, supernet and network

•    CSharp

IPNetwork command line and C# library take care of complex network, ip, netmask, cidr, subnet, subnetting, supernet and supernetting calculation for .Net developpers. It works with IPv4, it is written in C# and has a light and clean API and is fully unit tested.

NIPAP - Neat IP Address Planner - NIPAP is the best open source IPAM in the known universe, challenging classical IP address management (IPAM) systems in many areas

•    Python

NIPAP is a sleek, intuitive and powerful IP address management system built to efficiently handle large amounts of IP addresses. Having been developed at a fairly large service provider with operations throughout Europe, NIPAP is well suited for large organisations with massive amounts of IP addresses just as well as smaller enterprises with simple needs. The intuitive web interface lowers the barrier of entry considerable for beginner users while also offering advanced search by regexp and IPv4/IPv6 prefix. It features a powerful Google-style search, both a web GUI and a CLI together with client libraries for Python, Java and Oracle for those that want to integrate with other systems.

IPAddressRange - .NET Class Library for range of IP address, both IPv4 and IPv6.

•    CSharp

This library allows you to parse range of IP address string such as "192.168.0.0/24" and "192.168.0.0 / 255.255.255.0" and "192.168.0.0-192.168.0.255", and can conatins check. This library supports both IPv4 and IPv6.If you have to use signed assembly, you can use IPAddressRange.Signed NuGet package instead of IPAddressRange.

GestioIP IPAM - IP address management

•    Perl

An automated, Web based IP address management (IPAM) software. It features powerful search and filter functions for both networks and host, as well as many tools (e.g. a subnet calculator) helping Administrators to plan and handle complex IP networks

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.

echoip - IP address lookup service

•    Go

A simple service for looking up your IP address. This is the code that powers https://ifconfig.co. Pass the appropriate flag (usually -4 and -6) to your client to switch between IPv4 and IPv6 lookup.

sly - Sylvester the Cat's Common Lisp IDE

•    Common

``` _____ __ __ __ / ___/ / / \ \/ / |\ _,,,---,,_ \__ \ / / \ / /,`.-'`' -. ;-;;,_ ___/ / / /___ / / |,4- ) )-,_..;\ ( `'-' /____/ /_____/ /_/ '---''(_/--' `-'\_)```SLY is Sylvester the Cat's Common Lisp IDE for Emacs. See it in action in[this screencast][7].SLY is a direct fork of [SLIME][1], and contains the following improvements overit:* Completely redes

netaddr - A network address manipulation library for Python

•    Python

A network address manipulation library for Python

flannel - Network fabric for containers, designed for Kubernetes

•    Go

Flannel runs a small, single binary agent called flanneld on each host, and is responsible for allocating a subnet lease to each host out of a larger, preconfigured address space. Flannel uses either the Kubernetes API or etcd directly to store the network configuration, the allocated subnets, and any auxiliary data (such as the host's public IP). Packets are forwarded using one of several backend mechanisms including VXLAN and various cloud integrations.

better-defaults - A small number of better defaults for Emacs

•    Emacs

There are a number of unfortunate facts about the way Emacs works out of the box. While all users will eventually need to learn to write Emacs Lisp in order to customize it to their particular tastes, this package attempts to address the most obvious of deficiencies in uncontroversial ways that nearly everyone can agree upon. Why not just fix Emacs? Suggesting a change to the defaults of Emacs usually results in a long thread in which people who have been using Emacs for decades loudly complain about how the change would be disruptive to their habits and how it's just one line for people to get the improved behaviour in their own config files. While I would love to see each of these changes become part of Emacs, I don't hold a lot of hope for it.

ipcat - Categorization of IP Addresses

•    Go

ipcat: datasets for categorizing IP addresses. This is a list of IPv4 address that correspond to datacenters, co-location centers, shared and virtual webhosting providers. In other words, ip addresses that end web consumers should not be using.

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 ...

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.

oh-my-emacs - [Stopped] Provide an awesome, out-of-box, literate dotemacs for both newbies and nerds

•    Emacs

I’ve been inactive on this project for a long long time, sorry about that since I’m busy on my personal business. And I’m looking for a new maintainer for this project since I’ve switched to spacemacs recently, and I must say that I’m really impressed by the work of spacemacs community. Among all of the above, however, I still prefer oh-my-emacs’s org-mode based literate documentation. It’s an amazing experimentation and a wonderful journey for literate programming, in a modern way. This is the best part of oh-my-emacs.

ComputeIP

•    Perl

ComputeIP does IP scanning and IP Subnet calculation.Scanner uses multithreading to find status,MAC and host.It has easy troubleshooting interfaces to check the current subnet, n/w,loopback,g/w,internet reachability.Calculator can create or find subnet

el-get - Manage the external elisp bits and pieces upon which you depend!

•    Emacs

El-Get allows you to install and manage elisp code for Emacs. It supports lots of different types of sources and is able to install them, update them and remove them, but more importantly it will init them for you. That means it will require the features you need, load the necessary files, set the Info paths so that C-h i shows the new documentation you now depend on, and finally call your own initialisation code for you to setup the extension. Or call it a package. There are many methods to keep track of your emacs setup. You can manage it all in a private git repository, you can set up git submodules or directly import external repositories. You can manually retrieve the various packages you wish to track and ensure they are installed on any machine you apply your configuration to.

subnet - Simple, auditable & elegant VPN, built with TLS mutual authentication and TUN.

•    Go

Simple VPN server/client for the rest of us. subnet establishes a TLS connection to the server. A TUN interface is created, and setup with the given network parameters (local IP, subnet). All traffic that matches the localIP + subnet gets routed to the VPN server.