Browse free open source C Networking Software and projects below. Use the toggles on the left to filter open source C Networking Software by OS, license, language, programming language, and project status.

  • Gen AI apps are built with MongoDB Atlas Icon
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  • 1
    net-snmp
    Net-SNMP provides tools and libraries relating to the Simple Network Management Protocol including: An extensible agent, an SNMP library, tools to request or set information from SNMP agents, tools to generate and handle SNMP traps, etc.
    Leader badge
    Downloads: 19,116 This Week
    Last Update:
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  • 2

    Formerly Intel Ethernet Drivers

    Moved to github.com/intel

    Notice! Effective August 16, 2024, Intel will no longer use Sourceforge to distribute software for Ethernet products. ==================== Please refer to our GitHub location for future software updates here: https://intel.github.io/ethernet-linux/
    Leader badge
    Downloads: 903 This Week
    Last Update:
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  • 3
    lmbench is a suite of simple, portable, ANSI/C microbenchmarks for UNIX/POSIX. In general, it measures two key features: latency and bandwidth. lmbench is intended to give system developers insight into basic costs of key operations.
    Leader badge
    Downloads: 3,202 This Week
    Last Update:
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  • 4

    net-tools

    Linux networking base tools

    A collection of programs that form the base set of the NET-3 networking distribution for the Linux operating system. Includes: arp, hostname, ifconfig, netstat, rarp, route, plipconfig, slattach, mii-tool and iptunnel and ipmaddr. A mirror of the sourcecode is available on https://github.com/ecki/net-tools
    Leader badge
    Downloads: 1,356 This Week
    Last Update:
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  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
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  • 5
    Nagios Open Source

    Nagios Open Source

    Nagios Open Source network monitoring software - The Standard In ITM

    Nagios network monitoring software is a powerful, enterprise-class host, server, application, and network monitoring tools. Designed to be fast, flexible, and rock-solid stable. Nagios runs on *NIX hosts and can monitor Windows, Linux/Unix/BSD, Netware, and network devices.
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    Downloads: 206 This Week
    Last Update:
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  • 6
    AlienVault OSSIM

    AlienVault OSSIM

    Open Source SIEM

    OSSIM, AlienVault’s Open Source Security Information and Event Management (SIEM) product, provides event collection, normalization and correlation. For more advanced functionality, AlienVault Unified Security Management (USM) builds on OSSIM with these additional capabilities: * Log management * Advanced threat detection with a continuously updated library of pre-built correlation rules * Actionable threat intelligence updates from AlienVault Labs Security Research Team * Rich analytics dashboards and data visualization
    Leader badge
    Downloads: 101 This Week
    Last Update:
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  • 7
    Untangle
    Untangle is a Linux-based network gateway with pluggable modules for network applications like spam blocking, web filtering, anti-virus, anti-spyware, intrusion prevention, bandwidth control, captive portal, VPN, firewall, and more. Visit http://untangle.com
    Downloads: 24 This Week
    Last Update:
    See Project
  • 8
    A collection of single floppy disk based Network Attached Storage (NAS) Server Operating Systems, designed to transform a basic computer into a dedicated SMB/CIFS, FTP or NFS file server.
    Downloads: 12 This Week
    Last Update:
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  • 9
    Libnids - NIDS E-component, based on Linux kernel. This library provides IP defragmentation, TCP reassembly and port scan detection.
    Downloads: 17 This Week
    Last Update:
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  • Connect every part of your business to one bank account Icon
    Connect every part of your business to one bank account

    North One is a business banking app that integrates cash flow, payments, and budgeting to turn your North One Account into one Connected Bank Account

    North One is proudly built for small businesses, startups and freelancers across America. Make payments easily, keep tabs on your money and put your finances on autopilot through smart integrations with the tools you’re already using. North One was built to make managing money easy so you can focus on running your business. No more branches. No more lines. No more paperwork. Get complete access to your North One Account from your phone or computer, wherever your business takes you. Create Envelopes for taxes, payroll, rent, and anything else automatically.
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  • 10
    UltraVNC

    UltraVNC

    UltraVNC: Remote Access Tools VNC/RFB Remote Desktop Support Software

    UltraVNC: Remote Desktop Support Software - Remote PC Access - Remote Desktop Connection Software - VNC/RFB Compatibility - Virtual Network Computing - Remote Frame Buffer - FileTransfer - Encryption Plugin - Text Chat - MS Authentication
    Downloads: 5 This Week
    Last Update:
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  • 11
    Wireshark

    Wireshark

    We no longer host here. Please use https://www.wireshark.org

    Official releases can be found at https://www.wireshark.org/ Wireshark is a powerful network protocol analyzer developed by an international team of networking experts. It runs on UNIX, OS X and Windows. (Looking for Ethereal? You're in the right place. We switched names in May 2006 due to trademark issues.)
    Downloads: 5 This Week
    Last Update:
    See Project
  • 12
    netwib
    Netwib provides sniff, spoof, client, server and most functions needed by network programs.
    Downloads: 26 This Week
    Last Update:
    See Project
  • 13
    WiKID Two-Factor Authentication System

    WiKID Two-Factor Authentication System

    Two-factor authentication system

    The WiKID Strong Authentication System is a public-key based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc. Read our eGuide on how to setup your network with two-factor authentication: http://www.wikidsystems.com/learn-more/two-factor-authentication-white-papers
    Downloads: 9 This Week
    Last Update:
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  • 14

    ION-DTN

    Delay-Tolerant Networking suitable for spacecraft and ground

    2/17/2024 * Official distribution site for ION and ION-core has moved to GitHub: https://github.com/nasa-jpl/ION-DTN https://github.com/nasa-jpl/ion-core * ION documentation: https://nasa-jpl.github.io/ION-DTN/ * This site will continue to host ION 4.1.2 and all earlier releases. ============================= ION development is managed by the Jet Propulsion Lab; regression testing and code management are provided by Ohio University. The Interplanetary Overlay Network (ION) software distribution implements Delay-Tolerant Networking (DTN) architecture, as described in Internet RFC 4838. It is intended to be usable in embedded environments, including spacecraft flight computers and ground systems. ION 4.x builds BPv7 (RFC 9171) by default, with a configure option for BPv6 (RFC 5050). Windows installers for both BPv6 and BPv7 are provided.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 15
    CacheGuard-OS

    CacheGuard-OS

    Web Gateway Appliance

    CacheGuard-OS, amongst other functions, embeds a Web Gateway allowing you to have control over what type of Web content is allowed in your organization, by whom and when. The Web Gateway works as a transparent or explicit Web proxy and blocks malware and other unwanted contents such as ads or adult websites at gateway even in an encrypted format (HTTPS). In addition, its caching capability allows you to cache bandwidth-intensive traffic such as YouTube or Windows updates in order to save your bandwidth. CacheGuard Web Gateway is distributed as an open source OS called CacheGuard-OS that you can install on a virtual or hardware machine of your choice. Once installed on a machine, CacheGuard-OS transforms that machine into a network appliance. In addition to the Web Gateway, CacheGuard-OS includes multitude of other services such as VPN, WAF and WAN optimization. CacheGuard products are especially designed to address SME requirements by providing functional solutions.
    Leader badge
    Downloads: 4 This Week
    Last Update:
    See Project
  • 16

    proxychains-ng

    continuation of the famous proxychains project by netcreature

    proxychains is a hook preloader that allows to redirect TCP traffic of existing dynamically linked programs through one or more SOCKS or HTTP proxies.
    Downloads: 10 This Week
    Last Update:
    See Project
  • 17

    plptools

    PROJECT MOVED TO https://github.com/plptools/plptools

    THIS PROJECT HAS MOVED TO GITHUB! Libraries and utilities for communication between Unix and EPOC PDAs (Psion Series 3, Psion Series 5 etc.).
    Downloads: 13 This Week
    Last Update:
    See Project
  • 18
    IPCAD runs captures traffic on the specified interfaces (BPF, PCAP, divert, tee, ULOG, IPQ), and records the traffic for later retrieval and analysis. Traffic exported via RSH or NetFlow.
    Downloads: 10 This Week
    Last Update:
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  • 19
    This project will serve as a central hosting/bug tracking center for modifications to the SmoothWall.org firewall distribution. Support and information for the "mods" posted here can be found on the SmoothWall.org forums, the SmoothWall.org IRC server, or
    Downloads: 4 This Week
    Last Update:
    See Project
  • 20
    netwox
    Toolbox netwox helps to find and solve network problems. Netwox contains 223 tools.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 21
    sntop is a curses-based top-esque console utility for monitoring the connectivity of network hosts, supported features include execution of external file on status change, color support, secure terminal mode, daemon mode, and html generation.
    Leader badge
    Downloads: 6 This Week
    Last Update:
    See Project
  • 22
    Using the InterNet Control Message Protocol (ICMP) "ECHO" facility, monitors several hosts, and notify admin if some of them are down.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 23

    simpleproxy

    Simple TCP proxy [MOVED to github!]

    This project has moved to https://github.com/vzaliva/simpleproxy Please submit new issues and patches there. This page is no longer updated.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 24
    Open source firewall project for Unix systems
    Leader badge
    Downloads: 3 This Week
    Last Update:
    See Project
  • 25
    tcptrace

    tcptrace

    tcptrace analyzes packet tcp connections and provides analysis

    tcptrace is a tool written by Shawn Ostermann at Ohio University, for analysis of TCP dump files. It can take as input the files produced by several popular packet-capture programs, including tcpdump, snoop, etherpeek, HP Net Metrix, and WinDump. tcptrace can produce several different types of output containing information on each connection seen, such as elapsed time, bytes and segments sent and recieved, retransmissions, round trip times, window advertisements, throughput, and more. It can also produce a number of graphs for further analysis.
    Downloads: 2 This Week
    Last Update:
    See Project
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