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

  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
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  • PRTG Catches Network Issues Before They Cause Downtime Icon
    PRTG Catches Network Issues Before They Cause Downtime

    Threshold-based alerts flag problems early, so your team can act before users notice, not after.

    Reactive troubleshooting usually means hearing about a problem from frustrated users, not your monitoring tool. PRTG sets threshold-based alerts across devices, servers and applications, notifying your team by email, SMS or push the moment a metric crosses a set limit. That means catching a failing disk or overloaded server before it becomes an outage and getting time back from firefighting. Start a free trial and set your first alerts today.
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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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    Downloads: 87,807 This Week
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  • 2
    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: 30,233 This Week
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  • 3
    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: 1,310 This Week
    Last Update:
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  • 4
    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: 2,919 This Week
    Last Update:
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  • Veeam Data Platform v13.1 - Get Your Free Trial Icon
    Veeam Data Platform v13.1 - Get Your Free Trial

    Secure by design, portable by default. Recover clean, fast, anywhere. Start a free trial.

    Try Veeam Data Platform today. Experience the unified platform that's secure by design, portable by default, and proven to recover clean, fast, and anywhere.
    Try it Free
  • 5

    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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    Downloads: 507 This Week
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  • 6
    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: 329 This Week
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  • 7
    Synapse

    Synapse

    Matrix reference homeserver

    Matrix is an ambitious new ecosystem for open federated Instant Messaging and VoIP. Everything in Matrix happens in a room. Rooms are distributed and do not exist on any single server. Rooms can be located using convenience aliases like #matrix:matrix.org or #test:localhost:8448. Synapse is currently in rapid development, but as of version 0.5 we believe it is sufficiently stable to be run as an internet-facing service for real usage! Create and manage fully distributed chat rooms with no single points of control or failure. Eventually-consistent cryptographically secure synchronization of room state across a global open network of federated servers and services. Send and receive extensible messages in a room with (optional) end-to-end encryption. Use 3rd Party IDs (3PIDs) such as email addresses, phone numbers, Facebook accounts to authenticate, identify and discover users on Matrix.
    Downloads: 45 This Week
    Last Update:
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  • 8

    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: 186 This Week
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  • 9
    libmms is a library for downloading (streaming) media files using the mmst and mmsh protocols.
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    Downloads: 298 This Week
    Last Update:
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 10
    Network Security Toolkit (NST)

    Network Security Toolkit (NST)

    A network security analysis and monitoring toolkit Linux distribution.

    Network Security Toolkit (NST) is a bootable ISO image (Live USB Flash Drive) based on Fedora 44 providing easy access to best-of-breed Open Source Network Security Applications and should run on most x86_64 systems. The main intent of developing this toolkit was to provide the security professional and network administrator with a comprehensive set of Open Source Network Security Tools. The majority of tools published in the article: Top 125 Security Tools by INSECURE.ORG are available in the toolkit. An advanced Web User Interface (WUI) is provided for system/network administration, navigation, automation, network monitoring, host geolocation, network analysis and configuration of many network and security applications found within the NST distribution. In the virtual world, NST can be used as a network security analysis, validation and monitoring tool on enterprise virtual servers hosting virtual machines.
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    Downloads: 138 This Week
    Last Update:
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  • 11
    NetTime is a simple, free time synchronization client for Win32, providing a client and server for SNTP and RFC868. Its main claim to fame is that it is small, simple and unobtrusive.
    Downloads: 102 This Week
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  • 12
    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 17 or newer (tested with the LTS versions of Java up to 25) - 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.
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    Downloads: 65 This Week
    Last Update:
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  • 13
    Mnet is a distributed file store. It is formed by an emergent network of autonomous nodes which self-organize to make the network robust and efficient.
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    Downloads: 247 This Week
    Last Update:
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  • 14

    PeerGuardian

    PeerGuardian - a privacy oriented firewall application

    PeerGuardian is a privacy oriented firewall application. It blocks connections to and from hosts specified in huge blocklists (thousands or millions of IP ranges). Its origin seeds in targeting aggressive IPs while you use P2P. PeerGuardian Linux: Not developed actively anymore. Team might still be around. Some unreleased changes on git. Outdated technology. Peerguardian OS X: Not developed anymore. We've lost contact with the OS X developer. PeerGuardian Windows: Not developed anymore. It's highly recommended to use PeerBlock instead, which is a continuation of PeerGuardian's development in Windows, with bug fixes and support for Windows Vista and Windows 7. Collaboration with peerblock.com is welcome! PeerGuardian is an open project. Not only is its source code open for you to read, use, and modify - but the project is open for you to join and contribute in any form (code, documentation, bug reports, web and support).
    Downloads: 44 This Week
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  • 15
    SpyBot - keeping an eye on AIM.
    Downloads: 225 This Week
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  • 16
    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: 31 This Week
    Last Update:
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  • 17
    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: 32 This Week
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  • 18
    Virtual Router Plus Windows Wifi Hotspot

    Virtual Router Plus Windows Wifi Hotspot

    Turns any Windows 7 or later computer into a Wifi Hot Spot

    Virtual Router Plus is based on Virtual Router project and turns any Windows 7 or later computer into a Wifi Hot Spot using Wireless Hosted Network technology.
    Downloads: 101 This Week
    Last Update:
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  • 19
    anyremote

    anyremote

    Remote control software for applications using wi-fi or bluetooth

    Remote control software for applications using wi-fi or bluetooth.
    Downloads: 26 This Week
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  • 20
    udt
    UDT: UDP-based Data Transfer Protocol
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    Downloads: 30 This Week
    Last Update:
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  • 21
    wive-ng

    wive-ng

    Wive-NG Operation System

    Opensource frimware for platforms based on some SoC (Realtek RTL8186 - Wive-NG, Realtek RTL8671B/RTL8671BH/RTL8672 - Wive-NG-DSL, Ralink RT3050/RT3052 - Wive-NG-RTNL, MT7620/MT7621 - Wive-NG-MT) For detailed discussion of commercial use please mail to info@wi-cat.ru. For more details in russian please go to https://wi-cat.ru Any support for end user only in https://wi-cat.ru/forums/ forum page. Author page: http://wive-ng.sf.net Commercial support support@wi-cat.ru Supported device list: 1) Wive-NG-HQ - latest FW tree (only commercial access) 2) Wive-NG-MT (current) - https://wi-cat.ru/wive-ng/ustroystva-postavlyaemyie-s-os-wive-ng-mt-s-zavoda-2015-2017g/ 3) Wive-NG-RTNL (EOL) - http://wive-ng.sourceforge.net/?WR-NL_RT3050%282%29:Sovmestimye_ustroystva 4) Wive-NG-ADSL (EOL) - http://wive-ng.sourceforge.net/?W422G.v3_8671BH_%284%2F16%29
    Downloads: 24 This Week
    Last Update:
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  • 22
    GameNetworkingSockets

    GameNetworkingSockets

    Reliable & unreliable messages over UDP

    GameNetworkingSockets is a basic transport layer for games. A reliability layer significantly more sophisticated than a basic TCP-style sliding window. It is based on the "ack vector" model from DCCP (RFC 4340, section 11.4) and Google QUIC and discussed in the context of games by Glenn Fiedler. The basic idea is for the receiver to efficiently communicate to the sender the status of every packet number (whether or not a packet was received with that number). By remembering which segments were sent in each packet, the sender can deduce which segments need to be retransmitted. Encryption. AES-GCM-256 per packet, Curve25519 for key exchange and cert signatures. The details for shared key derivation and per-packet IV are based on the design used by Google's QUIC protocol. This library has shipped on consoles, mobile platforms, and non-Steam stores, and has been used to facilitate cross-platform connectivity. Contact us to get access to the code.
    Downloads: 4 This Week
    Last Update:
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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: 4 This Week
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  • 24
    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.
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    Downloads: 37 This Week
    Last Update:
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  • 25
    WiFi Password Recovery

    WiFi Password Recovery

    A free utility to recover the passwords of wireless networks

    WiFi Password Recovery is a free utility to recover the passwords of the WiFi networks saved on your computer. For example if you forgot the password of a WiFi network (which you have entered in the past), you can easily recover it thanks to this tool. WiFi Password Recovery provides a very simple user interface which shows also other informations (SSID, Interface, Security type, Encryption algorithm) for each wireless network. The program is able to recover the passwords of wireless networks which use the following security types: WEP, WPA, WPA-PSK, WPA2, WPA2-PSK.* GitHub Repository: https://github.com/EvolSoft/WiFi-Password-Recovery *Note: On Windows XP the passwords of WiFi networks using WPA security will be shown as 64 HEX digits. You can use these characters as password to connect to the wireless network anyway.
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    Downloads: 104 This Week
    Last Update:
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