ipv4

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

Network utility for sending / receiving TCP, UDP, SSL, HTTP

🖖 Fast, modern, easy-to-use network scanner

Enterprise Network Flow Collector (IPFIX, sFlow, Netflow)

🇨🇳免费IP地址数据库，已支持IPV4+IPV6 ，结构化输出为国家、省、市、县、运营商)，中文数据库，方便实用。

Dynamic DNS service

🌚 🌍 🌝 GeoIP 规则文件加强版，同时支持定制 V2Ray dat 格式路由规则文件 geoip.dat 和 MaxMind mmdb 格式文件 Country.mmdb。Enhanced edition of GeoIP files for V2Ray, Xray-core, Trojan-Go, Clash and Leaf, with replaced CN IPv4 CIDR available from ipip.net, appended CIDR lists and more.

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.

Cloudflare WARP 多功能一键脚本，（自动识别WGCF与SOCKS5环境，同步循环Endpoint的IP，1：自定义设置刷新奈飞IP、自定义设置奈飞的IP区域，2：自定义设置仅刷IP区域，3：自定义WARP的IP段），支持升级WARP+及Teams账户。已测试：hax纯v6站，Euserv(德鸡)，oracle（甲骨文云）等…………功能更新增加中…

Reliable UDP networking library

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.

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

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

Managed C# abstraction of GameNetworkingSockets library by Valve Software

BGP Dashboard and Monitoring Web Application

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

OpenBSD Router Boilerplate

Paul's PPP Package: PPP daemon and associated utilities | Official GitHub repo: https://github.com/ppp-project/ppp

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

SIIT and NAT64 for Linux

Cloudflare Warp One Click Script

Immutable value object for IPv4 and IPv6 addresses, including helper methods and Doctrine support.

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

PHP Library for manipulating network addresses (IPv4 and IPv6)