ZMap is a fast single packet network scanner designed for Internet-wide network surveys.

Smart DNS proxy to watch Netflix

The BGP swiss army knife of networking

🚩 自动更新域名解析到本机IP(支持dnspod,阿里DNS,CloudFlare,华为云,DNSCOM...)

Network utility for sending / receiving TCP, UDP, SSL

🦄 🎃 👻 V2Ray 路由规则文件加强版，可代替官方规则文件。Enhanced edition of V2Ray routing rules dat files.

Enterprise Network Flow Collector (IPFIX, sFlow, Netflow) from Verizon Media

Dynamic DNS service

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

A network address manipulation library for Python

Fork of DDoS Deflate with fixes, improvements and new features.

Retrieve and parse whois data for IPv4 and IPv6 addresses

Highly portable C system library: threads and synchronization primitives, sockets (TCP, UDP, SCTP), IPv4 and IPv6, IPC, hash functions (MD5, SHA-1, SHA-2, SHA-3, GOST), binary trees (RB, AVL) and more. Native code performance.

Reliable UDP networking library

TCP/IP networking stack in pure OCaml, using the Mirage platform libraries. Includes IPv4/6, ICMP, and UDP/TCP support.

💻 a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript

BGP Dashboard and Monitoring Web Application

IPNetwork command line and C# library take care of complex network, IP, IPv4, IPv6, netmask, CIDR, subnet, subnetting, supernet, and supernetting calculation for .NET developers. It works with IPv4 as well as IPv6, is written in C#, has a light and clean API, and is fully unit-tested

OpenBSD Router Boilerplate

Managed C# abstraction of GameNetworkingSockets library by Valve Software

Socket and Networking Library using msgpack.org[C++11]

Example config.boot files for UBNT EdgeRouters with Google, Comcast, and Charter

PHP Library for manipulating network addresses (IPv4 and IPv6)

Useful tools for IP manipulations

SIIT and NAT64 for Linux

Tool made to automate tasks of pentesting.

Java library for handling IP addresses and subnets, both IPv4 and IPv6

ASP.NET Core middleware for IP address filtering.

nftables load balancer

A library for fast IP address lookup in Python.