Open Source Windows Networking Software

Networking Software for Windows

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Browse free open source Networking software and projects for Windows 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
    Scrollout F1

    Scrollout F1

    An easy-to-use anti-spam email gateway

    • Designed for Linux and Windows email system administrators, Scrollout F1 is an easy to use, already adjusted email firewall (gateway) offering free anti-spam and anti-virus protection aiming to secure existing email servers, old or new, such as Microsoft Exchange, Lotus Domino, Postfix, Exim, Sendmail, Qmail and others. • Built-in multilayer security levels make configuration effort equal to a car radio. • It combines simplicity with effective protection using powerful open source with additional set of rules & filters. • Available as 64bit: - ISO image (Internet connection required during installation) - install from scratch (Internet connection required during installation). • Minimum Requirements (for 5,000 messages/day): 1 GB of RAM 30 GB storage drive 1 Processor x86/AMD64 1 Ethernet x 1 IPv4 address UDP ports: 53 123 4500 6277 24441 TCP ports: 25 80 443 2703
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    4.8 out of 5 stars 85 Reviews
    Downloads: 87,796 This Week
    Last Update:
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  • 2
    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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    4.9 out of 5 stars 32 Reviews
    Downloads: 25,270 This Week
    Last Update:
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  • 3
    NetMod VPN Client (V2Ray/SSH)
    NetMod is a free, advanced VPN client and set of network tool, offering VPN protocols including SSH, HTTP(S), Socks, VMess, VLess, Trojan, Shadowsocks, ShadowsocksR, DNSTT, OpenVPN. unblock the internet censorship and stay anonymous online. Any question related to project can be asked in here: https://www.facebook.com/NetModSyna/ netmodsyna@gmail.com Telegram: https://t.me/netmod_vpn_channel Get Android version: https://play.google.com/store/apps/details?id=com.netmod.syna NetMod may be used free of charge, but if you wish to express your appreciation for the time and resources the authors have expended developing and supporting it over the years, we do accept and appreciate donations. Click the following links to donate. Thank you! https://www.paypal.com/paypalme/NetModSyna https://buymeacoffee.com/netmod https://trakteer.id/netmod/tip
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    4.6 out of 5 stars 55 Reviews
    Downloads: 5,153 This Week
    Last Update:
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  • 4
    waircut

    waircut

    WPS wireless protocol audit software for Windows

    Wireless Air Cut is a WPS wireless, portable and free network audit software for Ms Windows. It is used to check the security of our wps wireless networks and to detect possible security breaches. You can check if the router has a generic and known wps pin set, if it is vulnerable to a brute-force attack or is vulnerable to a Pixie-Dust attack. You can see the Installation instructions on Wiki. ------- Wireless Air Cut es un software de auditoria del protocolo WPS en redes wireless, portable, libre y gratuito para Ms Windows. Sirve para comprobar la seguridad WPS de nuestras redes wireless y detectar posibles brechas de seguridad. Puede comprobar si el router tiene establecido un pin wps genérico y conocido, si es vulnerable a un ataque por fuerza bruta o si es vulnerable a un ataque Pixie-Dust. Ver Instrucciones de instalación en la wiki.
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    4.7 out of 5 stars 21 Reviews
    Downloads: 4,197 This Week
    Last Update:
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  • 5
    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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    4.8 out of 5 stars 60 Reviews
    Downloads: 3,721 This Week
    Last Update:
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  • 6
    V2Ray

    V2Ray

    V2Ray is a set of tools for building your own private network

    Project V is a set of tools to help you build your own privacy network over internet. The core of Project V, named V2Ray, is responsible for network protocols and communications. It can work alone, as well as combine with other tools.
    5.0 out of 5 stars 1 Review
    Downloads: 708 This Week
    Last Update:
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  • 7

    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.
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    5.0 out of 5 stars 34 Reviews
    Downloads: 2,293 This Week
    Last Update:
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  • 8
    Alt-F

    Alt-F

    free alternative firmware for the DLink DNS-320/320L/321/323/325/327L

    Alt-F provides a free and open source alternative firmware for the DLINK DNS-320/320L/321/323/325/327L and DNR-322L. Alt-F has Samba and NFS; supports ext2/3/4, VFAT, NTFS, BTRFS; RAID 0, 1, 5 (with external USB disk) and JBOD; supports up to 8TB disks; rsync, ftp, sftp, ftps, ssh, lpd, DNS and DHCP servers, DDNS, fan and leds control, clean power up and down... and more. Alt-F also has a set of comprehensive administering web pages, you don't need to use the command line to configure it. Besides the built-in software, Alt-F also supports additional packages on disk, including ffp and Entware packages, that you can install, update and uninstall using the administering web pages Alt-F is being developed and tested on a DNS-323-rev-A1/B1, a DNS325-rev-A1, a DNS-320L-rev-A1 and on a DNS-327L-rev-A1 hardware boards. Other models and boards are said to work. Support Forum: http://groups.google.com/group/alt-f Homepage: http://sites.google.com/site/altfirmware
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    4.8 out of 5 stars 88 Reviews
    Downloads: 2,258 This Week
    Last Update:
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  • 9
    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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    4.3 out of 5 stars 87 Reviews
    Downloads: 2,697 This Week
    Last Update:
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    Paessler: Easy to Use With Enterprise Power. Free Trial

    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

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  • 10
    Pandora Open

    Pandora Open

    Open Source Monitoring System for performance and availability.

    Pandora OPEN is a high-performance, 100% open-source monitoring ecosystem, born as the independent evolution of the Pandora FMS community branch after version 777. Licensed under GPLv2, it provides a modular and sovereign platform for supervising networks, servers, and applications without commercial dependencies. It features multi-platform agents, remote monitoring (SNMP, WMI, HTTP), GIS maps, and advanced visual dashboards. Entirely maintained by the community on GitHub, it ensures total transparency, technical flexibility, and absolute freedom for system administrators.
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    4.8 out of 5 stars 40 Reviews
    Downloads: 1,829 This Week
    Last Update:
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  • 11
    simplewall

    simplewall

    Simple tool to configure Windows Filtering Platform (WFP)

    simplewall is an open-source Windows application that provides a user-friendly firewall control interface powered by Windows Filtering Platform (WFP), enabling users to block or allow outgoing and incoming network connections without diving into complex OS settings or command-line tools. The app presents a clean, intuitive UI where users can define rules based on process names, IP addresses, ports, and protocols, making it possible to restrict apps from accessing the internet or control specific traffic flows with fine granularity. Because simplewall leverages WFP directly, it operates at a low level in the network stack, ensuring reliable enforcement of rules system-wide while remaining lightweight. It also includes optional modes like blocking all inbound or outbound traffic except what’s explicitly allowed, and supports temporary rule application, logging, and diagnostic views to help users understand what traffic is being blocked or permitted.
    Downloads: 393 This Week
    Last Update:
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  • 12
    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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    5.0 out of 5 stars 24 Reviews
    Downloads: 1,632 This Week
    Last Update:
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  • 13
    VirtualBox

    VirtualBox

    Virtualization software for x86_64 hardware

    VirtualBox is a powerful open-source full virtualization software that allows a user to run one or more “guest” operating systems simultaneously inside “virtual machines” on a single physical “host” machine. It supports a wide variety of host platforms (Linux, Windows, macOS, Solaris, etc.) and guest OSes, enabling, for example, running Linux on a Windows PC, running Windows Server on a Linux host, or even legacy OSes in a controlled environment. This flexibility makes VirtualBox ideal for developers, testers, sysadmins, or hobbyists who need different OS environments, want to test software across systems, or need isolation for development, sandboxing, or security experiments. VirtualBox offers both a user-friendly GUI as well as a command-line interface and headless mode, making it useful for desktop usage as well as server or automated environments.
    Downloads: 319 This Week
    Last Update:
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  • 14
    RuView

    RuView

    Turn WiFi signals into real-time human sensing and spatial awareness.

    RuView is an edge AI perception system that transforms ordinary WiFi signals into real-time environmental sensing and human pose estimation. Built on the concept of WiFi DensePose, it analyzes disturbances in WiFi Channel State Information (CSI) caused by human movement to reconstruct body position, breathing patterns, heart rate, and presence. Unlike traditional vision systems, RuView operates without cameras, wearables, or cloud connectivity, making it a privacy-first sensing solution. The system runs on low-cost hardware such as ESP32 sensor meshes and performs signal processing and machine learning directly at the edge. By learning the RF signature of each environment over time, RuView adapts automatically to different spaces and improves its sensing accuracy. Designed for applications ranging from healthcare monitoring to disaster response, it enables spaces to gain spatial awareness using the radio signals already present in the environment.
    Downloads: 275 This Week
    Last Update:
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  • 15
    Wireshark

    Wireshark

    Powerful, open-source network protocol analyzer

    Wireshark is a powerful network protocol analyzer developed by an international team of networking experts. It runs on UNIX, OS X and Windows. Official releases can be found at https://www.wireshark.org/
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    5.0 out of 5 stars 24 Reviews
    Downloads: 1,170 This Week
    Last Update:
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  • 16
    Aether

    Aether

    Aether is a censorship circumvention client

    Aether is a censorship-circumvention client designed for networks where filtering, deep packet inspection, protocol fingerprinting, throttling, and endpoint blocking are common. It automatically searches for reachable gateways and validates that a route can actually pass data before trusting it. The client can establish encrypted connectivity through MASQUE over HTTP/3 or HTTP/2 and also supports WireGuard-based modes. Traffic obfuscation and optional TLS ClientHello fragmentation are available for environments that inspect connection patterns. Automatic reconnection can reuse the last known working gateway instead of repeating a full scan. Applications connect through a local SOCKS5 proxy exposed by Aether. Prebuilt releases target Linux, Windows, macOS, and Android through Termux, while the source is primarily built with Rust.
    Downloads: 242 This Week
    Last Update:
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  • 17
    HypoMux

    HypoMux

    Windows multi-NIC bandwidth aggregator

    HypoMux is a Windows multi-network bandwidth aggregation tool for high-concurrency downloads. It is designed for PCs connected to multiple independent networks, such as Ethernet, Wi-Fi, and mobile hotspot connections. The app distributes different download connections across available network interfaces so multi-threaded downloads can use more combined throughput. Version 2 adds a virtual network adapter mode alongside the original system proxy mode for broader traffic handling. It also includes process-level routing rules so latency-sensitive apps can bypass aggregation while download-heavy apps use it. HypoMux is best suited for large Steam updates, download managers, browser downloads, and similar multi-connection workloads, not single-stream transfers.
    Downloads: 167 This Week
    Last Update:
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  • 18

    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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    5.0 out of 5 stars 4 Reviews
    Downloads: 996 This Week
    Last Update:
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  • 19
    NetBird

    NetBird

    Connect your devices into a secure WireGuard-based overlay network

    NetBird is an open-source solution that builds a WireGuard®-based overlay network enabling seamless, encrypted peer-to-peer connectivity without the complexity of firewall rules, port forwarding, or centralized VPN gateways. It integrates access control features such as SSO and MFA for secure, policy-driven networking. Every machine in the network runs NetBird Agent (or Client) that manages WireGuard. Every agent connects to Management Service that holds network state, manages peer IPs, and distributes network updates to agents (peers). NetBird agent uses WebRTC ICE implemented in pion/ice library to discover connection candidates when establishing a peer-to-peer connection between machines.
    Downloads: 129 This Week
    Last Update:
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  • 20
    Endian Firewall Community
    Endian Firewall Community (EFW) is a "turn-key" linux security distribution that makes your system a full featured security appliance with Unified Threat Management (UTM) functionalities. The software has been designed for the best usability: very easy to install, use and manage and still greatly flexible. The feature suite includes stateful packet inspection firewall, application-level proxies for various protocols (HTTP, FTP, POP3, SMTP) with antivirus support, virus and spam-filtering for email traffic (POP and SMTP), content filtering of Web traffic and a "hassle free" VPN solution (based on both OpenVPN and IPsec).
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    Downloads: 3,151 This Week
    Last Update:
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  • 21
    AdGuard Home

    AdGuard Home

    Network-wide ads and trackers blocking DNS server

    AdGuard Home is a network-wide software for blocking ads & tracking. After you set it up, it’ll cover ALL your home devices, and you don’t need any client-side software for that. With the rise of Internet-Of-Things and connected devices, it becomes more and more important to be able to control your whole network. Block throughout the whole system. This includes video ads and ads in your favorite apps, browsers, games, and on any website you can imagine. Dozens of ad filters are available to you and are updated on a regular basis, guaranteeing the best filtering quality. Protecting your personal data is our top priority. With AdGuard, you and your sensitive data will be safe from any online tracker and analytics system that may attempt to steal your data while surfing the web. Use the Family protection mode to block access to all websites with adult content and enforce safe search in the browser, in addition to the regular perks of ad blocking and browsing security.
    Downloads: 109 This Week
    Last Update:
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  • 22

    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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    4.8 out of 5 stars 56 Reviews
    Downloads: 431 This Week
    Last Update:
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  • 23
    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: 2,526 This Week
    Last Update:
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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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    5.0 out of 5 stars 3 Reviews
    Downloads: 690 This Week
    Last Update:
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  • 25

    Acrylic DNS Proxy

    A local DNS proxy which improves the performance of your computer

    Acrylic is a local DNS proxy for Windows which improves the performance of your computer by caching the responses coming from your DNS servers and helps you fight unwanted ads through the use of a custom HOSTS file (optimized for handling hundreds of thousands of domain names) with support for wildcards and regular expressions. When you browse a web page a portion of the loading time is dedicated to name resolution while the rest is dedicated to the transfer of the web page contents. What Acrylic does is to reduce the time dedicated to name resolution for frequently visited addresses closest to zero possible. Furthermore Acrylic's sliding expiration caching mechanism and DNS silent updates are able to improve the browsing experience independently of the browser. With Acrylic you can also gracefully overcome downtimes of your DNS servers without disrupting your work, because in that case you will at least be able to connect to your favourite websites and to your email server.
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    4.2 out of 5 stars 19 Reviews
    Downloads: 540 This Week
    Last Update:
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