C Networking

Open-source C projects categorized as Networking

Top 23 C Networking Projects

  • curl

    A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP. libcurl offers a myriad of powerful features

    Latest mention: Food on the table while giving away source code | reddit.com/r/programming | 2021-01-15


  • libuv

    Cross-platform asynchronous I/O

    Latest mention: GitHub Stale Bots – A False Economy | news.ycombinator.com | 2021-01-18

    I submitted a PR to make a small improvement the libuv documentation... [0] and the stale bot wants to close it on me.

    I think closing PRs as stale is particularly annoying.

    [0] https://github.com/libuv/libuv/pull/3076

  • kcp

    :zap: KCP - A Fast and Reliable ARQ Protocol

  • libevent

    Event notification library

  • mongoose

    Mongoose Embedded Web Server Library - a multi-protocol embedded networking library with TCP/UDP, HTTP, WebSocket, MQTT built-in protocols, async DNS resolver, and non-blocking API.

    Latest mention: Extremely fast HTTP requests library | reddit.com/r/cpp | 2020-12-24

    Perhaps check out mongoose (https://github.com/cesanta/mongoose).

  • poco

    The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems.

  • libwebsockets

    canonical libwebsockets.org networking library

  • netcode

    A protocol for secure client/server connections over UDP

  • onion

    C library to create simple HTTP servers and Web Applications.

  • frr

    The FRRouting Protocol Suite

    Latest mention: C Template Library | news.ycombinator.com | 2020-12-29

    Shameless plug:



    Differs in a bunch of design decisions. Memory management for items is strictly out of scope, though some of the structures use malloc/free for their own purposes (e.g. heap). Much more focus on sorted/hashed structures, explicitly differentiating for [not] having duplicate items that compare equal. Also, atomic/lock-free versions. Uses macros instead of #including files multiple times.

    But fun to see someone else's go at the same idea :)

  • facil.io

    Your high performance web application C framework

  • dyad

    Asynchronous networking for C

  • WAFer

    WAFer is a C language-based software platform for scalable server-side and networking applications. Think node.js for C programmers.

  • ENet-CSharp

    Reliable UDP networking library

  • fossa

    Async non-blocking multi-protocol networking library for C/C++

  • polyphony

    Fine-grained concurrency for Ruby

  • npf

    NPF: packet filter with stateful inspection, NAT, IP sets, etc.

    Latest mention: Setting Up A Jenkins Server On NetBSD | dev.to | 2020-10-04

    Configure some basic firewall rules for NPF to block all incoming traffic except SSH, HTTP and HTTPS. Note that the network interface here may be different:

  • FGRoute

    Get your device ip address, router ip or wifi ssid

  • nginx-haskell-module

    Nginx module for binding Haskell code in configuration files for great good!

  • network-info

    Get information about local network adapters such as name, IP address, MAC address

  • netmon_cli

    A simple and lightweight terminal packet sniffer.

    Latest mention: netmon_cli: A simple Terminal Packet Sniffer written in C using ONLY built in libs. | reddit.com/r/HowToHack | 2020-12-31
  • wpa_supplicant.ex

    See Nerves.WpaSupplicant now

  • curlhs

    Haskell bindings to curl library (libcurl)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2021-01-18.


What are some of the best open-source Networking projects in C? This list will help you:

Project Stars
1 curl 19,153
2 libuv 16,618
3 kcp 9,230
4 libevent 7,050
5 mongoose 6,824
6 poco 4,946
7 libwebsockets 2,879
8 netcode 1,949
9 onion 1,714
10 frr 1,636
11 facil.io 1,370
12 dyad 1,248
13 WAFer 690
14 ENet-CSharp 438
15 fossa 396
16 polyphony 201
17 npf 157
18 FGRoute 102
19 nginx-haskell-module 92
20 network-info 24
21 netmon_cli 9
22 wpa_supplicant.ex 5
23 curlhs 2