Browse free open source Internet software and projects for Desktop Operating Systems and BSD below. Use the toggles on the left to filter open source Internet software by OS, license, language, programming language, and project status.

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  • 1
    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: 3,602 This Week
    Last Update:
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  • 2
    Moodle

    Moodle

    A free course management system (CMS) to create online learning sites

    Moodle is a Course Management System (CMS), also known as a Learning Management System (LMS) or a Virtual Learning Environment (VLE). It is a Free web application that educators can use to create effective online learning sites. https://moodle.org/
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    Downloads: 590 This Week
    Last Update:
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  • 3

    aria2 - CLI Metalink/BitTorrent client

    A multi-protocol & multi-source, cross platform download utility

    aria2 is a multi-protocol & multi-source, cross platform download utility. The supported protocols are HTTP(S), FTP, BitTorrent, Metalink. It can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth.
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    Downloads: 135 This Week
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  • 4
    MLDonkey is a multi-platform multi-network peer-to-peer client.
    Downloads: 94 This Week
    Last Update:
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  • 5
    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: 37 This Week
    Last Update:
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  • 6
    YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!
    Downloads: 7 This Week
    Last Update:
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  • 7
    The Nemesis Project is designed to be a command line based, portable human IP stack for UNIX-like and Windows systems. The suite is broken down by protocol, and should allow for useful scripting of injected packets from simple shell scripts.
    Downloads: 19 This Week
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  • 8
    tsocks provides transparent network access through a SOCKS version 4 or 5 proxy (usually on a firewall). tsocks intercepts the calls applications make to establish TCP connections and transparently proxies them as necessary.
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    Downloads: 29 This Week
    Last Update:
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  • 9
    basE91 is an advanced method for encoding binary data as ASCII characters. It is similar to UUencode or base64, but is more efficient. The overhead produced by basE91 depends on the input data. It amounts at most to 23% and can range down to 14%.
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    Downloads: 27 This Week
    Last Update:
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  • 10
    OpenChange Project

    OpenChange Project

    Microsoft Exchange compatible server and client libraries

    OpenChange is a portable Open Source implementation of Microsoft Exchange server and Exchange protocols. It provides a complete solution to interoperate with Microsoft Outlook clients or Microsoft Exchange servers. OpenChange client-side library is used in existing messaging clients and is the solution in new projects to communicate natively with Microsoft Exchange and Exchange-compatible servers. OpenChange server is a transparent Microsoft Exchange server replacement using native Exchange protocols and does not require any plugin installation in Outlook.
    Downloads: 9 This Week
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  • 11

    libquickmail

    C library for sending e-mail (with attachments) from C/C++

    C library intended to give C/C++ developers a quick and easy way to send e-mail from their applications. Supports multiple To/Cc/Bcc recipients and multiple attachments without size limitation. For the actual SMTP communication either libcurl can be used or the built in SMTP support. The library can also be used to just create a multipart MIME message body. Also comes with a command line application (quickmail) for sending mails (mutiple attachments supported) from command line or scripts. Cross-platform. Binary packages available for Windows (32-bit and 64-bit).
    Downloads: 7 This Week
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  • 12
    The program thrulay is used to measure the capacity, delay, and other performance metrics of a network by sending a bulk TCP or UDP stream over it.
    Downloads: 8 This Week
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  • 13
    Jitterbit is an open source integration tool that delivers a quick and simple way to design, configure, test, and deploy integration solutions. It supports many document types and protocols: XML, web services, database, LDAP, text, FTP, HTTP(S), file
    Downloads: 6 This Week
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  • 14
    DownloadDaemon
    DownloadDaemon is a comfortable download-manager with many features like one-click-hoster support, etc. It can be remote-controled in several ways (web/gui/console clients), which makes it perfect for file- and root-servers, as well as for local use.
    Downloads: 2 This Week
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  • 15
    IceGenerator is a direct stream generator for Icecast/Shoutcast servers. Streams MP3 to an Icecast/Shoutcast server without resampling it, saving CPU. Features directories search, MySQL/PGSQL support, ID3, M3U/PLS, META dynamic info and telnet interf
    Downloads: 3 This Week
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  • 16
    raddump interprets captured RADIUS packets to print a timestamp, packet length, RADIUS packet type, source and destination hosts and ports, and included attribute names and values for each packet.
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    Downloads: 7 This Week
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  • 17

    FSP Client with FTP-like interface

    FSP command line client with FTP like interface

    FSPClient is single executable client for FSP protocol. FSPClient uses FTP-likeuser interface. It feels like FTP but under hood is FSP. This is a continuationof this program unmaintained for 10 years. FSP is UDP based protocol fortransfering files around
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    Downloads: 6 This Week
    Last Update:
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  • 18
    Stuntman - STUN server and client

    Stuntman - STUN server and client

    High performance, production quality STUN server and client library

    New version 1.2. This is the code to STUNTMAN - an open source STUN server and client code by john selbie. Compliant with the latest RFCs including 5389, 5769, and 5780. Also includes backwards compatibility for RFC 3489. ICE and WebRTC ready. Version 1.2 compiles on Linux, MacOS, BSD, and Solaris. Supports the STUN protocol on both UDP and TCP for both IPv4 and IPv6. Windows binaries are also provided. Additional features are in development. This is a mirror of the code on https://github.com/jselbie/stunserver More details on the project's website: http://www.stunprotocol.org
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    Downloads: 6 This Week
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  • 19
    The WBXML Library is a C library for handling WBXML (Wireless Binary XML) documents. It consists of a WBXML Parser (with a SAX like interface), a generic WBXML Encoder, and an internal representation of the document (WBXMLTree).
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    Downloads: 5 This Week
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  • 20
    A progress indicator for web based file uploads with PHP, perl and JSP. Originally the project was a solution to the lack of a progress monitor for PHP file upload. Since then it has expanded to include upload monitors for perl and JSP.
    Downloads: 1 This Week
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  • 21
    A Free SOCKS proxy server for Linux, macos and FreeBSD
    Downloads: 4 This Week
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  • 22

    Meanwhile

    Open implementation of the Lotus Sametime protocol

    THIS PROJECT HAS MOVED Please visit https://github.com/obriencj/meanwhile The Meanwhile project is an open implementation of the Lotus Sametime client protocol. The project provides a library written in C, a python module, and a Gaim plugin utilizing the library.
    Downloads: 3 This Week
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  • 23
    ACE RADIUS library is a portable open-source implementation of RADIUS protocol, as defined in RFCs 2865 and 2866. It's written in C++ and is supported on a wide variety of POSIX-compliant platforms, including Linux and Solaris, and on Windows.
    Downloads: 2 This Week
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  • 24
    Eggdrop
    Eggdrop is the most advanced IRC robot available. It has been under development since December 1993, and unlike most other bots, it is still regularly updated.
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    Downloads: 2 This Week
    Last Update:
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  • 25
    E-Mail based Web Browsing. Provide a way to view and use many (but not all for semi-obvious reasons) web pages, with only an e-mail account. Ideal for Blackberry and other limited e-mail only wireless devices.
    Downloads: 2 This Week
    Last Update:
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