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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  • 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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  • 1
    Angry IP Scanner

    Angry IP Scanner

    A cross-platform network scanner that is fast and simple to use

    Angry IP scanner is fast and friendly network scanner for Windows, Linux, and Mac. It is very extensible, allowing it to be used for very wide range of purposes, with the primary goal of being useful to network administrators.
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    Downloads: 2,701 This Week
    Last Update:
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  • 2
    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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  • 3
    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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  • 4
    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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  • 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
  • 5
    Securepoint SSL VPN Client

    Securepoint SSL VPN Client

    SSL VPN Client for Windows (OpenVPN).

    SSL VPN Client for Windows (OpenVPN).
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    Downloads: 1,057 This Week
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  • 6
    Iometer
    I/O performance Analysis Tool
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    Downloads: 551 This Week
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  • 7
    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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  • 8
    WinMTR is a free MS Windows visual application that combines the functionality of the traceroute and ping in a single network diagnostic tool.
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    Downloads: 2,717 This Week
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  • 9
    OpenHardwareMonitor

    OpenHardwareMonitor

    Free open source tool for real-time PC hardware sensor monitoring

    Open Hardware Monitor is a free and open source hardware monitoring application designed primarily for personal computers. It provides real-time insights into key system metrics such as temperatures, fan speeds, voltages, load percentages, and clock speeds by reading directly from sensors embedded in CPUs, GPUs, motherboards, and storage devices. The tool supports a wide range of sensor hardware found on modern systems, including Intel and AMD processors, NVIDIA and AMD graphics cards, SMART temperature sensors on storage drives, and many motherboard monitoring chips. Users can view monitored data directly within the application, as customizable desktop gadgets, or through a system tray interface, making it easy to keep an eye on system health at a glance. OpenHardwareMonitor runs without the need for a traditional installation (it can be run portably) and on systems configured with the appropriate runtime (e.g., .NET or Mono).
    Downloads: 69 This Week
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  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

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    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.
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  • 10
    SnmpB
    SnmpB is an SNMP MIB browser written in QT. It supports SNMPv1, SNMPv2c & SNMPv3. SnmpB can browse/edit/load/add MIB files and can query SNMP agents. It also supports agent discovery, trap events, and graph plotting.
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    Downloads: 355 This Week
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  • 11
    SKUDONET

    SKUDONET

    SKUDONET Open Source Load Balancer and Web Application Firewall

    SKUDONET Community Edition is an Open Source Load Balancer and Web Application Firewall (WAF) designed for Linux server environments. Formerly known as Zevenet, it is based on Debian 12.8, providing a stable and secure foundation for reliable application delivery and cybersecurity. This edition is suitable for Linux and Windows server deployments (not for mobile platforms), offering advanced Layer 4 and Layer 7 traffic management with support for up to 250,000 TCP requests per second (L4) and 70,000 HTTPS requests per second (L7). SKUDONET Community Edition includes a full REST JSON API for integration into on-premises or hybrid cloud infrastructures, and it is used in thousands of deployments worldwide. Documentation, administration guides, and API references are available at: https://www.skudonet.com/knowledge-base/
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    Downloads: 545 This Week
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  • 12
    TCP/IP Manager

    TCP/IP Manager

    At home or at work, changing settings is now just one click away!

    TCP/IP Manager is designed to help computer users keep track of their network configuration in different locations. At home or at work, changing network settings is now just one click away!
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    Downloads: 109 This Week
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  • 13
    AlienFX Tools

    AlienFX Tools

    Alienware systems lights, fans, and power control tools and apps

    AlienFX Tools is a suite of utilities aimed at controlling lighting, fan, and power behaviors on Alienware systems, directly interfacing with USB or ACPI hardware rather than relying on official drivers. This project supports a broad range of effects and modes, allowing users to customize RGB lighting zones, create and switch profiles based on system states (like power source or running applications), and generate lighting behaviors tied to thermal and performance events. Because it operates at a low level, alienfx-tools can offer faster update rates and more flexible configurations compared to some manufacturer software. It includes both command-line and graphical frontend elements to support different user preferences, making it suitable for automation as well as interactive use. Enthusiasts use it to tailor lighting aesthetics and system responsiveness, especially on systems where official Alienware control panels are unavailable or problematic.
    Downloads: 20 This Week
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  • 14
    Visual Syslog Server for Windows

    Visual Syslog Server for Windows

    Free Syslog Server for Windows with a graphical user interface

    Visual Syslog Server for Windows is a free open source program to receive and view syslog messages. Useful when setting up routers and systems based on Unix/Linux. Visual Syslog Server for Windows has a live messages view: switches to a new received message. Helpful color highlighting. Useful message filtering. Customizable notification and actions. Sources hosted on the GitHub: https://github.com/MaxBelkov/visualsyslog
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    Downloads: 121 This Week
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  • 15
    Self Integrated DNS DHCP Server Open Source Freeware Windows/Linux. Works as DHCP or DNS Server or both. Using both services automatically adds DHCP allotted hosts automatically to DNS Server. Support Relay Agent, PXEBOOT, BOOTP, Zone Trasfer, DHCP Range Filters. Download.
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    Downloads: 89 This Week
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  • 16
    Serial Studio

    Serial Studio

    Multi-purpose serial data visualization & processing

    Serial Studio is a simple, multi-platform, and multi-purpose serial data visualization program that allows embedded developers to visualize, analyze, and present data generated from their projects and devices while avoiding the need to write project-specific visualization software. Over my many CanSat-based competitions, I found myself writing and maintaining several Ground Station software for each program. However, I decided that it would be easier and more sustainable to define one flexible Ground Station Software that lets developers define how each CanSat presents data using an extensible communication protocol for easy data visualization. Developers can also use Serial Studio for almost any data acquisition and visualization project outside of CanSat, now supporting data retrieval from hardware serial ports, software serial ports, MQTT, and network sockets (TCP/UDP). You can download and install Serial Studio for your preferred platform.
    Downloads: 18 This Week
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  • 17
    qTox

    qTox

    qTox is a chat, voice, video, and file transfer IM client

    qTox is a cross-platform, secure messaging and video calling client for the Tox peer-to-peer protocol. It offers end-to-end encryption, zero metadata leakage, and no central servers, making it a privacy-focused alternative to mainstream messaging apps. qTox includes rich features like file transfers, screen sharing, and group chats, all built with a user-friendly interface powered by Qt. As a decentralized app, qTox ensures that user communication is secure, private, and independent of centralized infrastructure.
    Downloads: 16 This Week
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  • 18
    Antinat is a flexible SOCKS server and client library for writing proxy-based applications. It supports SOCKS 4, SOCKS 5, authentication, CHAP, XML firewalling, Win32, server chaining, and UDP. It also contains very experimental IPv6 support.
    Downloads: 411 This Week
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  • 19
    Zeek

    Zeek

    Zeek is a powerful network analysis framework

    Zeek has a long history in the open source and digital security worlds. Vern Paxson began developing the project in the 1990s under the name “Bro” as a means to understand what was happening on his university and national laboratory networks. Vern and the project’s leadership team renamed Bro to Zeek in late 2018 to celebrate its expansion and continued development. Zeek is not an active security device, like a firewall or intrusion prevention system. Rather, Zeek sits on a “sensor,” a hardware, software, virtual, or cloud platform that quietly and unobtrusively observes network traffic. Zeek interprets what it sees and creates compact, high-fidelity transaction logs, file content, and fully customized output, suitable for manual review on disk or in a more analyst-friendly tool like a security and information event management (SIEM) system.
    Downloads: 15 This Week
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  • 20
    conky

    conky

    Light-weight system monitor for X

    Conky is a free, light-weight system monitor for X, that displays any kind of information on your desktop. Conky is free software and runs in X on Linux and BSD. Originally a fork of Torsmo, Conky's torsmo-based code is BSD licensed. New code in Conky has been licensed under GPL 3.0. Since its inception, Conky has changed significantly from its predecessor, while maintaining simplicity and configurability. Conky can display just about anything, either on your root desktop, in its own window. Not only does Conky have many built-in objects, it can also display just about any piece of information by using scripts and other external programs. A plethora of OS stats (uname, uptime, CPU usage, mem usage, disk usage, "top" like process stats, and network monitoring, just to name a few). Conky can display information either as text, or using simple progress bars and graph widgets, with different fonts and colours.
    Downloads: 14 This Week
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  • 21
    Firewall Builder is a GUI firewall management application for iptables, PF, Cisco ASA/PIX/FWSM, Cisco router ACL and more. Firewall configuration data is stored in a central file that can scale to hundreds of firewalls managed from a single UI. A message from project maintainers: After working on Firewall Builder for many years it is with some sadness that Vadim and I are announcing that we have suspended all development activity for this project. Firewall Builder has been a great project to work on and we have truly appreciated all the support and positive feedback that the user community has provided. Without you we wouldn’t have been able to keep things going this long. You might be wondering why we are doing this... We had an exciting opportunity come up to start a company developing advanced security automation solutions. This was a chance of a lifetime that we just couldn’t pass up and unfortunately it means that we no longer have time available to work on improv
    Downloads: 60 This Week
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  • 22
    This project implements a simple STUN server and client on Windows, Linux, and Solaris. The STUN protocol (Simple Traversal of UDP through NATs) is described in the IETF RFC 3489, available at http://www.ietf.org/rfc/rfc3489.txt
    Downloads: 58 This Week
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  • 23
    WiFiManager

    WiFiManager

    WiFi Connection manager with web captive portal

    Espressif ESPx WiFi Connection manager with fallback web configuration portal. The configuration portal is of the captive variety, so on various devices it will present the configuration dialogue as soon as you connect to the created access point. When your ESP starts up, it sets it up in Station mode and tries to connect to a previously saved Access Point. If this is unsuccessful (or no previous network saved) it moves the ESP into Access Point mode and spins up a DNS and WebServer (default ip 192.168.4.1). Using any wifi enabled device with a browser (computer, phone, tablet) connect to the newly created Access Point. Because of the Captive Portal and the DNS server you will either get a 'Join to network' type of popup or get any domain you try to access redirected to the configuration portal. ESP will try to connect. If successful, it relinquishes control back to your app. If not, reconnect to AP and reconfigure.
    Downloads: 10 This Week
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  • 24
    nheko

    nheko

    Desktop client for Matrix using Qt and C++20

    Desktop client for Matrix using Qt and C++20. The motivation behind the project is to provide a native desktop app for Matrix that feels more like a mainstream chat app (Element, Telegram etc) and less like an IRC client.
    Downloads: 10 This Week
    Last Update:
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  • 25
    SBLIM (pronounced "sublime"), the Standards Based Linux Instrumentation for Manageability is an IBM-initiated Open Source project, intended to enhance the manageability of GNU/Linux systems. It does so by enabling WBEM, Web Based Enterprise Management.
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    Downloads: 92 This Week
    Last Update:
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