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

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  • 1

    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: 1,009 This Week
    Last Update:
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  • 2
    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: 85 This Week
    Last Update:
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  • 3
    nebula

    nebula

    Overlay networking tool with a focus on performance and simplicity

    Nebula is a scalable overlay networking tool with a focus on performance, simplicity and security. It lets you seamlessly connect computers anywhere in the world. Nebula is portable, and runs on Linux, OSX, Windows, iOS, and Android. It can be used to connect a small number of computers, but is also able to connect tens of thousands of computers. Nebula incorporates a number of existing concepts like encryption, security groups, certificates, and tunneling, and each of those individual pieces existed before Nebula in various forms. What makes Nebula different to existing offerings is that it brings all of these ideas together, resulting in a sum that is greater than its individual parts. Nebula is a mutually authenticated peer-to-peer software defined network based on the Noise Protocol Framework. Nebula uses certificates to assert a node's IP address, name, and membership within user-defined groups.
    Downloads: 71 This Week
    Last Update:
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  • 4
    FancySS

    FancySS

    fancyss is a project for bypassing the Great Firewall (GFW)

    Fancyss is a “scientific Internet access / bypassing censorship” toolkit targeted principally to Asus routers running AsusWRT or Merlin-based firmware. The project provides a plugin suite (with “software center” integration) so that home routers can run proxy or tunneling tools (e.g. V2Ray) to circumvent firewall or censorship (“GFW” in the Chinese context). Because it integrates into the router’s firmware environment, fancyss automates configuration, routing, and firewall rules to minimize manual tinkering. It supports multiple architectures and firmware versions, though some submodules or variants (e.g. “fancyss_hnd”) are optimized for specific chipsets. The project also maintains offline packages for constrained environments and hardware support lists. Many users adopt fancyss to turn relatively cheap consumer routers into censorship-resilient gateways, avoiding separate proxy appliances.
    Downloads: 6 This Week
    Last Update:
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    MongoDB Atlas runs apps anywhere

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  • 5

    Net Tools for Development

    A collection of network-oriented tools

    This Eclipse RCP application contains several free, useful network tools. Among others: - Standard network tools: ping, netstat, traceroute, nslookup - A port scanner - Servers: HTTP, FTP, TFTP servers - an HTTP proxy - A TCP tunnel - Clients: FTP client, embeddable PuTTY (for Windows only)
    Downloads: 26 This Week
    Last Update:
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  • 6
    Enables tunneling of network connections through restrictive HTTP proxies. Features: Portmapping, SOCKS4, SOCKS5, web-based admin interface, possibility to use standalone server (perl) or hosted server (PHP), optional authorization from LDAP or MySQL
    Downloads: 26 This Week
    Last Update:
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  • 7
    Network Flight Simulator

    Network Flight Simulator

    A utility to safely generate malicious network traffic patterns

    flightsim is a lightweight utility used to generate malicious network traffic and help security teams to evaluate security controls and network visibility. The tool performs tests to simulate DNS tunneling, DGA traffic, requests to known active C2 destinations, and other suspicious traffic patterns.
    Downloads: 2 This Week
    Last Update:
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  • 8
    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: 1 This Week
    Last Update:
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  • 9

    vtiger-mail-proxy

    Mail Proxy Applications

    Mail proxy friendly to PHP IMAP tunnel to server with XOAUTH2 support (like Gmail).
    Downloads: 2 This Week
    Last Update:
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  • 10

    Handy TCP/IP Server/Client Tools

    Various TCP/IP servers, clients and network management tools

    IPtools is an all in one package that includes various TCP/IP tools. Server: - FTP - TFTP - Syslog - Web - Remote Command - General UDP server - Multicast server Client utilities: - Multicast client - TFTP client Starting on version 0.2.0, a powerful network connection tools UBridge is added, it can bridge: - VXLAN (newly released) - UDP sessions - NIC card of the PC - Connections to Cisco Router Simulator "GNS3/dynamips" and H3C Router Simulator (LITO/CEN). UBridge can also be used as a Ethernet over UDP tunnel to remote bridge PC's local NIC, VXLAN, UDP proxy etc. Visit the Wiki page for detail. GUI tools include a network monitoring tool PMON, a SNMP and IP scanner. The project aim is to make them as light weight tools that can be directly executed in command prompt without the need of installation. (Except pmon and UBridge to bridge PC's NIC which require Winpcap). The whole package can be put into USB flash and 伴侶highly portable.
    Downloads: 1 This Week
    Last Update:
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  • 11
    ASProxyWing
    ASProxyWing is a handy, easy to use client / server desktop distributed proxy, which works as a HTTP-tunnel for clients. Provides high secure, easy to integrate proxy servers.
    Downloads: 0 This Week
    Last Update:
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  • 12
    This project intends to make a SOCKS compatible tunnel proxy which communicates to the server part, running on your nameserver, over standard DNS (UDP) protocol. That way you can bypass network firewalls allowing no other IP traffic but DNS.
    Downloads: 0 This Week
    Last Update:
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  • 13
    GSnova

    GSnova

    Private proxy solution & network troubleshooting tool

    GSnova is a high-performance proxy tool for bypassing internet censorship and securing network traffic through a range of supported transport protocols. It acts as a multi-protocol client/server proxy that can tunnel traffic over TLS, WebSocket, KCP, QUIC, and SSH. GSnova is optimized for resilience and speed under restrictive network conditions and supports multiple fronting strategies and obfuscation techniques. It's particularly suited for users in highly censored environments and developers building resilient networking tools.
    Downloads: 0 This Week
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  • 14
    tunnel a tcp/udp connection through a http(s) connection, surviving proxy-servers
    Downloads: 0 This Week
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  • 15
    JavaTunnel is a java, free, tunneling program. It can function in two ways: 1 It can open TCP/IP tunnel between two computers, using HTTP as a transport(not yet). 2 It can open a connection directly, witht he help of a SSL-HTTP proxy(avaible now).
    Downloads: 0 This Week
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  • 16
    This project focuses on bringing commercial quality L2TP support to Linux and possibly other Unixes. L2TP stands for Layer 2 Tunneling Protocol. It is a VPN similar to PPTP and a number of others. L2TP often competes with PPPoE.
    Downloads: 0 This Week
    Last Update:
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  • 17
    HTTP Tunnel that works with ANY HTTP proxy: no CONNECT method required! You can use the port redirector or Socks 4/4a/5 to connect outside your (restricted) LAN. An external web server is required, to be used as gateway.
    Downloads: 0 This Week
    Last Update:
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  • 18
    A lightweight, compact, stand-alone, platform-independent application to forward TCP (over IPv4 or IPv6) connections to another host. Possible uses include - but not limited to - firewall hacking, tunneling, proxying, fortifying ADSL, creating multi-plat
    Downloads: 0 This Week
    Last Update:
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  • 19
    Narrowlink

    Narrowlink

    A self-hosted solution to enable secure connectivity between devices

    Narrowlink is a zero-config tunneling and reverse proxy solution that enables secure access to services behind firewalls or NATs without exposing public IPs. Unlike traditional tools like ngrok, Narrowlink is peer-to-peer and privacy-focused, using WireGuard and WebRTC to establish direct encrypted tunnels between peers. It is designed to make exposing local services simple, fast, and secure with no need for port forwarding or cloud relays. Narrowlink is ideal for developers, self-hosters, and remote teams looking for frictionless, encrypted connectivity.
    Downloads: 0 This Week
    Last Update:
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  • 20
    OpenVPN 2

    OpenVPN 2

    Robust and flexible VPN network tunnelling

    OpenVPN 2 is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single TCP/UDP port. Discussion forums and project wiki can be found here: https://forums.openvpn.net/ https://community.openvpn.net/
    Downloads: 0 This Week
    Last Update:
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  • 21
    Skydive

    Skydive

    An open source real-time network topology and protocols analyzer

    Skydive is an open source real-time network topology and protocols analyzer providing a comprehensive way of understanding what is happening in your network infrastructure. Captures network topology, interface, bridge, and namespace attributes and keeps the history of all the modifications. Distributed probe, L2-L4 classifier, GRE, VXLAN, GENEVE, MPLS/GRE, MPLS/UDP tunneling support. Ability to follow a flow along a path in the topology. Support for external SDN Controllers or container-based infrastructure, OpenStack, OpenContrail, Docker. Supports extensions through API. Distributed, scalable, easy to deploy, only one static binary.
    Downloads: 0 This Week
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  • 22
    Telnet over HTTP proxy. Allows users behind firewalls to tunnel Telnet sessions over a HTTP connection. Server uses Java servlets with a Java or C# client.
    Downloads: 0 This Week
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  • 23
    VJDBC (Virtual JDBC) is a JDBC type 3 driver which provides efficient tunneling of JDBC commands/results over different communication protocols (RMI, HTTP, HTTPS ...).
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    Downloads: 0 This Week
    Last Update:
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  • 24
    In just one clic (no setup) this Java Applet based solution allows you to run VNC Server / VNC Viewer through an HTTP AES encrypted tunnel. As it is full HTTP, there is no proxy or firewall setup needed.
    Downloads: 0 This Week
    Last Update:
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  • 25
    WarpTunnel is a porting of http tunnel 3.3 from C into .NET C# platform. WarpTunnel creates a bidirectional virtual data path tunnelled in HTTP requests through firewall or proxy servers.Support DIGEST proxy & SOCKS4/4a/5.Client for Compact Framework 2.0
    Downloads: 0 This Week
    Last Update:
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