C Networking Software

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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.

  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
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  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • 1
    ImmortalWrt

    ImmortalWrt

    An opensource OpenWrt variant for mainland China users.

    ImmortalWrt is a fork of OpenWrt, with more packages ported, more devices supported, default optimized profiles and localization modifications for mainland China users. Compared to upstream, we allow to use (non-upstreamable) modifications/hacks to provide better feature/performance/support. Default login address: http://192.168.1.1 or http://immortalwrt.lan, username: root, password: none.
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    Downloads: 357,524 This Week
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  • 2

    AutoAP

    A script to find open Wi-Fi connections and the strongest signal

    AutoAP is a script that continuously scans for open Wi-Fi connections, tests them for validity, and connects to the strongest signal. If the connection is lost, the script scans again and finds the strongest valid signal again, and maintains a continuous connection to the internet in a mobile or portable environment. The script paremeters are highly configurable, including ability to configure secure connections. AutoAP is an add on to DD-WRT that allows routers to continuously scan for and connect to open (and predefined WEP) wireless networks. Ultimately the goal is to develop an easily deployable firmware that facilitates fast and easy mesh network creation. Typically, you would use this script on your router while in Repeater Mode, Client Mode, or Client-Bridged Mode.
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    Downloads: 38,364 This Week
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  • 3
    Comgt is a command line tool for controlling, configuring and interacting with Option Wireless 3G and 2G ( HSDPA, UMTS, EDGE, GPRS, GSM) data devices within the Linux environment.
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    Downloads: 32,894 This Week
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  • 4
    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.
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    Downloads: 20,526 This Week
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  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
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  • 5
    Drivers and tools to support ATM networking under Linux. Eventually this will also include support for some types of DSL modems.
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    Downloads: 56,665 This Week
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  • 6
    Zero Install
    Zero Install is a decentralised cross-distribution software installation system. Create one package that works everywhere! With dependency handling and automatic updates, full support for shared libraries, and integration with native package managers
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    Downloads: 4,958 This Week
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  • 7
    GNS3

    GNS3

    An advanced network simulator to design and configure virtual networks

    Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help. Whether you are studying for your first networking exam or building out a state-wide telecommunications network, GNS3 offers an easy way to design and build networks of any size without the need for hardware.
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    Downloads: 4,517 This Week
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  • 8
    The rpcbind utility is a server that converts RPC program numbers into universal addresses.: The upstream git tree is at: git://linux-nfs.org/~steved/rpcbind
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    Downloads: 14,810 This Week
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  • 9
    Smoothwall
    Smoothwall is a best-of-breed Internet firewall/router, designed to run on commodity hardware and to provide an easy-to-use administration interface to those using it. Built using open source and Free software, it's distributed under the GNU Public License.
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    Downloads: 2,415 This Week
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 10
    VTun is the easiest way to create Virtual Tunnels over TCP/IP networks with traffic shaping, compression, and encryption. It supports IP, Ethernet, PPP and other tunnel types. VTun is easily and highly configurable. VPN, Mobile IP, Shaping, etc
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    Downloads: 5,015 This Week
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  • 11
    Pandora Open

    Pandora Open

    Open Source Monitoring System for performance and availability.

    Pandora FMS is an enterprise-ready monitoring solution that provides unparalleled flexibility for IT to address both immediate and unforeseen operational issues, including infrastructure and IT processes. It uniquely enables business and IT to adapt to changing needs through a flexible and rapid approach to IT and business deployment. Pandora FMS consolidates all the needs of modern monitoring (ITOM, APM, BAM) and provides status and performance metrics from different operating systems, cloud, virtual infrastructure (VMware, Hyper-V, XEN), Docker containers, applications, storage and hardware devices such as firewalls, proxies, databases, web servers or routers. It's highly scalable (up to 2000 nodes with one single server), 100% web and with multi-tenant capabilities. It has a very flexible ACL system and several different graphical reports and user-defined control screens.
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    Downloads: 1,181 This Week
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  • 12

    UFTP

    Encrypted UDP based FTP with multicast

    UFTP is an encrypted multicast file transfer program, designed to securely, reliably, and efficiently transfer files to multiple receivers simultaneously. This is useful for distributing large files to a large number of receivers, and is especially useful for data distribution over a satellite link (with two way communication), where the inherent delay makes any TCP based communication highly inefficient. The multicast encryption scheme is based on TLS with extensions to allow multiple receivers to share a common key. UFTP also has the capability to communicate over disjoint networks separated by one or more firewalls (NAT traversal) and without full end-to-end multicast capability (multicast tunneling) through the use of a UFTP proxy server. These proxies also provide scalability by aggregating responses from a group of receivers.
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    Downloads: 1,618 This Week
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  • 13

    The GNU netcat

    The networking swiss army knife

    A rewrite of the well-known networking tool, but more portable, with new features and fully GNU compliant.
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    Downloads: 5,374 This Week
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  • 14
    VoIP monitor

    VoIP monitor

    VoIP SIP and SKINNY quality analyzer and packet / audio recording tool

    VoIPmonitor is open source network packet sniffer with commercial frontend for SIP SKINNY MGCP RTP and RTCP VoIP protocols running on linux. VoIPmonitor is designed to analyze quality of VoIP call based on network parameters - delay variation and packet loss according to ITU-T G.107 E-model which predicts quality on MOS scale. Calls with all relevant statistics are saved to MySQL or ODBC database. Optionally each call can be saved to pcap file with either only SIP / SKINNY protocol or SIP/RTP/RTCP/T.38/udptl protocols. VoIPmonitor can also decode audio.
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    Downloads: 747 This Week
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  • 15
    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.
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    Downloads: 4,207 This Week
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  • 16
    s3cmd

    s3cmd

    Command line tool for managing Amazon S3 and CloudFront services

    Open-source tool to access Amazon S3 file storage. S3cmd is a free command line tool and client for uploading, retrieving and managing data in Amazon S3 and other cloud storage service providers that use the S3 protocol, such as Google Cloud Storage. Lots of features and options have been added to s3cmd since its very first release in 2008.... we recently counted more than 60 command line options, including multipart uploads, encryption, incremental backup, s3 sync, ACL and Metadata management, S3 bucket size, bucket policies, and more!
    Leader badge
    Downloads: 1,033 This Week
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  • 17
    SoftEther VPN

    SoftEther VPN

    Cross-platform multi-protocol VPN software

    An open-source free cross-platform multi-protocol VPN program, as an academic project from University of Tsukuba, under the Apache License 2.0. The API Suite allows you to easily develop your original SoftEther VPN Server management application to control the VPN Server (e.g. creating users, adding Virtual Hubs, disconnecting a specified VPN sessions) from JavaScript, TypeScript, C# or other languages. SoftEther VPN ("SoftEther" means "Software Ethernet") is one of the world's most powerful and easy-to-use multi-protocol VPN software. It runs on Windows, Linux, Mac, FreeBSD and Solaris. SoftEther VPN is an optimum alternative to OpenVPN and Microsoft's VPN servers. SoftEther VPN has a clone-function of OpenVPN Server. You can integrate from OpenVPN to SoftEther VPN smoothly. SoftEther VPN is faster than OpenVPN. SoftEther VPN also supports Microsoft SSTP VPN for Windows Vista / 7 / 8. No more need to pay expensive charges for Windows Server license for Remote-Access VPN function.
    Downloads: 142 This Week
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  • 18

    Privoxy

    HTTP proxy to block ads and customize webpages

    Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks.
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    Downloads: 563 This Week
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  • 19
    Iometer
    I/O performance Analysis Tool
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    Downloads: 551 This Week
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  • 20
    MultiThreaded TFTP Server Open Source Freeware Windows/Unix for PXEBOOT, firmware load, support tsize, blksize, timeout Server Port Ranges, Block Number Rollover for Large Files. Runs as Service/daemon. Single Port version also available. Download
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    Downloads: 596 This Week
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  • 21

    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/
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    Downloads: 506 This Week
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  • 22
    Tools for the Linux Kernel's network block device, allowing you to use remote block devices over a TCP/IP network. Note that we have moved to github: https://github.com/NetworkBlockDevice/nbd
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    Downloads: 2,877 This Week
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  • 23
    Cntlm is an NTLM / NTLMv2 authenticating HTTP/1.1 proxy. It caches auth'd connections for reuse, offers TCP/IP tunneling (port forwarding) thru parent proxy and much much more. It's in C, very fast and resource-efficient. Go to http://cntlm.sf.net/
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    Downloads: 529 This Week
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  • 24

    IPMI Management Utilities

    Manage and interpret IPMI systems with common a software tool

    ipmiutil is an easy to use set of IPMI server management utilities. It can get/set sensor readings & thresholds, automate SEL management, do SOL console, etc. Supports Linux, Windows, BSD, Solaris, MacOSX. The only IPMI project tool that runs natively on Windows. See ipmiutil.sf.net for rpms, etc. (formerly called panicsel). It can run driverless in Linux for use on boot media or embedded environments.
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    Downloads: 702 This Week
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  • 25
    Divert

    Divert

    WinDivert: Windows Packet Divert

    Windows Packet Divert (WinDivert) is a user-mode packet interception library for Windows 7, Windows 8 and Windows 10. WinDivert can be used to implement user-mode packet filters, sniffers, firewalls, NATs, VPNs, IDSs, tunneling applications, etc.
    Downloads: 82 This Week
    Last Update:
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