Networking Software

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

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  • 1
    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: 4,459 This Week
    Last Update:
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  • 2

    Yet Another Java Service Wrapper

    Install java, groovy and native applications as services or daemons

    YAJSW is an Apache licensed pure java alternative for tanuki java service wrapper. It implements a multitude of additional functions and can be easily extended with groovy scripts. JSW configurations can be easily ported.
    Leader badge
    Downloads: 1,034 This Week
    Last Update:
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  • 3

    UPnP PortMapper

    Manage port forwardings via UPnP

    The UPnP PortMapper can be used to easily manage the port mappings/port forwarding of a UPnP enabled internet gateway/router in the local network.
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    Downloads: 277 This Week
    Last Update:
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  • 4
    RackTables
    Racktables is a nifty and robust solution for datacenter and server room asset management. It helps document hardware assets, network addresses, space in racks, networks configuration and much much more!
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    Downloads: 136 This Week
    Last Update:
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  • 5
    libmms is a library for downloading (streaming) media files using the mmst and mmsh protocols.
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    Downloads: 270 This Week
    Last Update:
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  • 6
    LibreNMS

    LibreNMS

    Community-based GPL-licensed network monitoring system

    Welcome to LibreNMS, a fully featured network monitoring system that provides a wealth of features and device support. LibreNMS is an auto-discovering PHP/MySQL/SNMP-based network monitoring that includes support for a wide range of network hardware and operating systems including Cisco, Linux, FreeBSD, Juniper, Brocade, Foundry, HP, and many more.
    Downloads: 23 This Week
    Last Update:
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  • 7
    SocketTest - powerful and small software tool for socket testing. It can create both TCP and UDP client or server. It can be used to test any server or client that uses TCP or UDP protocol to communicate.
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    Downloads: 104 This Week
    Last Update:
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  • 8
    OpenNMS

    OpenNMS

    A Java based fault and performance management system

    An Enterprise-Grade Network Management Application Platform that is 100% Free and Open Source Software.
    Downloads: 72 This Week
    Last Update:
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  • 9
    Komari

    Komari

    A simple server monitor tool

    Komari is a lightweight, self-hosted server monitoring solution designed to deliver simple and efficient infrastructure visibility with minimal resource overhead. The platform uses a lightweight agent to collect performance data from monitored nodes and presents the results through a clean web interface. Its architecture emphasizes ease of deployment and full data ownership, making it attractive for users who prefer private monitoring environments over managed services. Komari is designed to scale across servers of different sizes while maintaining low CPU and memory consumption. The dashboard provides real-time status views that allow administrators to quickly assess system health and uptime. Overall, Komari targets developers, homelab operators, and small infrastructure teams seeking a straightforward monitoring tool without the complexity of enterprise observability stacks.
    Downloads: 12 This Week
    Last Update:
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    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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  • 10
    NSClient++ is a windows service that allows performance metrics to be gathered by Nagios (and possibly other monitoring tools). It is an attempt to create a NSClient and NRPE compatible but yet extendable performance service for windows.
    Downloads: 52 This Week
    Last Update:
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  • 11
    OpenAS2

    OpenAS2

    AS2 1.1 server implementation in Java

    OpenAS2 is a java-based implementation of the EDIINT AS2 standard. It is intended to be used as a server. It is extremely configurable and supports a wide variety of signing and encryption algorithms. Supports very high traffic volume allowing parallel processing of files per partner. SUPPORT: Please use the Github issues and Discussions channels here: https://github.com/OpenAS2/OpenAs2App/ Requirements: - Java 11 or newer (tested with the LTS versions of Java up to 21) - Any OS that runs Java Planned enhancements in the next major release: - User interace configuration GUI - Certificate Exchange Management IMPORTANT: Java 8 is no longer supported.
    Leader badge
    Downloads: 47 This Week
    Last Update:
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  • 12
    SNMP Trap Translator is used to 'translate' traps received from the NET-SNMP / UCD-SNMP snmptrapd trap daemon into easy to understand messages. Git repository, downloads and support has been moved to https://github.com/snmptt/snmptt.
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    Downloads: 47 This Week
    Last Update:
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  • 13
    MyPerf4J

    MyPerf4J

    High performance Java APM. Powered by ASM

    MyPerf4J is an open source Java performance monitoring and profiling tool designed to help developers and operations teams analyze application behavior with minimal overhead. It focuses on providing lightweight yet high-precision metrics collection for method execution times, throughput, and latency, making it particularly useful in high-performance production environments. The project emphasizes low performance impact by using efficient time recording and aggregation techniques, allowing continuous monitoring without significantly affecting application speed. MyPerf4J supports both real-time monitoring and offline analysis through log aggregation and visualization tools. It integrates well with common Java ecosystems and can be embedded into existing services with relatively little configuration effort. Overall, the project targets teams that need deep insight into Java application performance while maintaining production stability and observability discipline.
    Downloads: 7 This Week
    Last Update:
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  • 14
    NagiosQL - Nagios configuration tool
    NagiosQL is a professional, web based configuration tool for Nagios 2.x/3.x/4.x. It is designed for large enterprise requirements as well as small environments. Any Nagios functionalities are supported.
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    Downloads: 40 This Week
    Last Update:
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  • 15
    Nipe

    Nipe

    An engine to make Tor network your default gateway

    Nipe is a Perl-based engine whose primary aim is to make the Tor network act as the default gateway for outgoing traffic. In practice, it configures system firewall rules (iptables) and network routing so that almost all IPv4 traffic is redirected through Tor. The tool provides commands such as install, start, stop, restart, and status to manage its behavior. When “start” is issued, it sets up the necessary rules; when “stop” is used, it attempts to remove those rules. Nipe currently operates over IPv4 and does not yet support IPv6, meaning that users with IPv6 connectivity may bypass Tor routing. It includes a Dockerfile to facilitate containerized usage, requiring sufficient network capabilities (e.g. NET_ADMIN) inside the container. Behind the scenes, the code is modular: for instance, parts of the logic around installation and utility functions are separated into Perl modules (e.g. in lib/Nipe/Utils/Install.pm).
    Downloads: 6 This Week
    Last Update:
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  • 16
    SNMP library for Python
    SNMP v1/v2c/v3 engine and apps written in pure-Python. Project moved to GitHub: https://github.com/etingof/pysnmp
    Leader badge
    Downloads: 32 This Week
    Last Update:
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  • 17
    Interlocking system for modular model railroading. The goal is the development of hard- and software for an model interlocking interfacing on the one hand to the model railroad and on the other to the model of the userinterface of an real interlocking.
    Leader badge
    Downloads: 141 This Week
    Last Update:
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  • 18
    jNetMap

    jNetMap

    Graphical network monitoring and documentation tool

    jNetMap is a graphical network monitoring and documentation tool. It will ping all registered devices every x minutes, updating the status according to the result of the ping. Requires Java 8 or higher
    Leader badge
    Downloads: 29 This Week
    Last Update:
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  • 19
    aMSN

    aMSN

    MSN compatible messenger application

    A very nice MSN compatible messenger application, aMSN Messenger is a multiplatform MSN messenger clone. Works pretty much like its Windows based counterpart. Perfect for keeping in touch with those friends who have not yet seen the light. Works on linux
    Downloads: 21 This Week
    Last Update:
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  • 20
    IP Monitor

    IP Monitor

    IP Monitor notifies you when your public IP address changes

    IP Monitor is a simple application which monitors your public IP address for changes and lets you set different kinds of notifications such as email, audio, pop up or executing a command. It can also run in background as a Windows service or Linux/Mac daemon.
    Downloads: 27 This Week
    Last Update:
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  • 21
    jNetPcap - A Libpcap Java Binding

    jNetPcap - A Libpcap Java Binding

    A java PCAP and DPI library

    A java wrapper for popular "libpcap" and "WinPcap" libraries. Accurate full API translation. Packet buffers delivered with no copies. Send custom packets, gather statistics. Comprehensive and easily extensible DPI engine.
    Downloads: 25 This Week
    Last Update:
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  • 22
    Hyenae
    Hyenae is a highly flexible platform independent network packet generator. It allows you to reproduce several MITM, DoS and DDoS attack scenarios, comes with a clusterable remote daemon and an interactive attack assistant. *** Hyenae is back *** Hyenae will be continued here: https://sourceforge.net/p/hyenae-ng
    Leader badge
    Downloads: 88 This Week
    Last Update:
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  • 23
    udt
    UDT: UDP-based Data Transfer Protocol
    Downloads: 13 This Week
    Last Update:
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  • 24
    Tracks usage of TCP/IP network subnets and builds html files with graphs to display utilization. Charts are built by individual ip. Color Codes HTTP, TCP,UDP, ICMP, VPN, P2P, etc. Click on the release notes icon for the latest release for more info.
    Downloads: 24 This Week
    Last Update:
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  • 25
    A distributed, peer-to-peer, server-less communication & messaging solution for JAVA (JMS), C++ and .NET applications, integrates with JBoss, WebLogic & WebSphere. Offers guaranteed delivery, security and transactions. Supports TCP, SSL & HTTP protocols.
    Downloads: 30 This Week
    Last Update:
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