Open Source Communications Software

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

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  • 1
    Siproxd is a proxy/masquerading daemon for the SIP protocol. It allows SIP clients (softphones & hardphones) to work behind an IP masquerading firewall or router.
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    Downloads: 47 This Week
    Last Update:
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  • 2
    Gqrx software defined radio receiver

    Gqrx software defined radio receiver

    Software defined radio for Linux and Mac

    Gqrx is a software defined radio receiver powered by GNU Radio and the Qt GUI toolkit. It can process I/Q data from many types of input devices, including Funcube Dongle Pro/Pro+, rtl-sdr, HackRF, and Universal Software Radio Peripheral (USRP) devices.
    Downloads: 28 This Week
    Last Update:
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  • 3
    Rumble Mail Server
    Rumble is a mail server suite for SMTP (ESMTPSA), HTTP, POP3 and IMAP4v1 with an extensive C/C++ and Lua API for scripting. It comes with support for SSL/TLS, SQLite and MySQL and has a web-based administration and webmail feature. Additional included modules feature greylisting, DNS blacklisting, SpamAssassin support and dynamic performance scaling as well as a multithreaded structure that allows for clustering of multiple servers for one or all domains, and with the ease of the Lua API, you can create your own new server mailing lists, CRM software, e-marketing and other extensions within minutes.
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    Downloads: 28 This Week
    Last Update:
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  • 4

    UNFS3

    UNFS3 is a user-space NFSv3 server

    UNFS3 is a user-space implementation of the NFSv3 server specification. It provides a unified mountd and nfsd program and so far runs under Linux, NetBSD, and Solaris.
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    Downloads: 35 This Week
    Last Update:
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  • 5
    Kiax is a softphone (soft phone, VoIP client) with a simple and comfortable user interface for making VoIP calls to Asterisk PBX. It depends on the iaxclient library to use Asterisk's IAX2 protocol for easy call configuration and audio setup.
    Downloads: 7 This Week
    Last Update:
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  • 6
    GoldBug - Encrypted Communications

    GoldBug - Encrypted Communications

    Chat Messenger. E-Mail-Client. Websearch. Filetransfer.

    GoldBug is a decentralized & secure communication suite that offers an integrated e-mail client, an instant messenger & a file transfer. Also included is an URL-RSS-DB & a p2p web search. Current vers. w/ McEliece Algorithm. GoldBug has been 2013 - 2023 ten years just another Graphical User Interface of the Spot-On Encryption Suite. Main GUI features: Minimal & colorful Interface with Tabs in the East. Microsoft & Qt MinGW deprecated Win32 & for Compiling: ● https://sourceforge.net/p/goldbug/wiki/compiling As Spot-On implemented the minimal GB-concept & Nuvola Icons, GoldBug has now been fully integrated into Spot-On Win64: Just choose Tabs at East & Mini-View in Options - w/ Nuvola Icons of course! Voilá! & Many Thanks, Pro-Files can be found archived at ● current source: https://github.com/textbrowser/spot-on ● EN Manual: https://www.amazon.com/dp/3749435065 ● DE: https://compendio.github.io/goldbug-manual-de/ ● Study: https://www.amazon.com/asin/dp/3750408971
    Downloads: 23 This Week
    Last Update:
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  • 7
    pcapsipdump is libpcap-based SIP sniffer with per-call sorting capabilities. It writes SIP/RTP sessions to disk in a same format, as "tcpdump -w", but one file per SIP session (even if there is thousands of concurrent SIP sessions). Getting started: http://pcapsipdump.sf.net/
    Downloads: 5 This Week
    Last Update:
    See Project
  • 8
    Calypso is a file sharing client using the anonymous network MUTE. Developped using C++ and Qt. For windows and linux, portable to other environments.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 9
    PortFusion

    PortFusion

    Distributed reverse / forward proxy and tunneling solution for TCP.

    PortFusion is a minimalistic, cross-platform, transport-layer distributed reverse / forward proxy for TCP written in Haskell + LLVM and released under GPLv3. A single package that makes the most of each platform by tapping into their unique capabilities, combining this power with an intuitive interface, beautiful design and Haskell's excellent support for unprecedented levels of concurrency and parallelism. It strives for the smallest source code size (< 500 lines) while delivering maximum throughput with near zero overhead.
    Downloads: 16 This Week
    Last Update:
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  • 10
    IRCD-Hybrid

    IRCD-Hybrid

    A lightweight, high-performance Internet Relay Chat server

    IRCD-Hybrid is a lightweight, high-performance Internet Relay Chat server.
    Downloads: 6 This Week
    Last Update:
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  • 11

    SCMxx

    Management tool for Siemens Mobile phones

    SCMxx allows you to exchange certain types of data with mobile phones made by Siemens Mobile. It works with the S25, S35i, M35i, C35i, SL45, S45 and ME45 and probably others.
    Downloads: 10 This Week
    Last Update:
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  • 12
    Downloads: 5 This Week
    Last Update:
    See Project
  • 13
    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: 5 This Week
    Last Update:
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  • 14
    RemoteBox

    RemoteBox

    A client for the remote use of VirtualBox on a server

    RemoteBox is an open-source VirtualBox client which means you can remotely administer (ie over the network) an installation of VirtualBox on a server, including its guests and interact with them as if they were running locally. VirtualBox is installed on the server machine and RemoteBox runs on the client machine. RemoteBox provides a complete Gtk 3 graphical interface with a look and feel similar to that of VirtualBox's native GUI and supports the vast majority of features.
    Downloads: 3 This Week
    Last Update:
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  • 15
    GNU Gatekeeper (GnuGk)

    GNU Gatekeeper (GnuGk)

    H.323 Gatekeeper for VoIP and videconferencing

    The project has moved! Please find current versions at https://www.gnugk.org/ The GNU Gatekeeper (GnuGk) is a full featured H.323 gatekeeper under GPL license. It supports VoIP and videoconferencing and includes Radius and database support and many call routing functions. The project has moved! Please find current versions at https://www.gnugk.org/
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    Simple Forum Auto Poster
    Simple Forum Auto Poster is a program that automatically posts messages to forums. This program is for people active on multiple forums, but don't want to type and copy/paste the same message multiple times.
    Downloads: 2 This Week
    Last Update:
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  • 17
    Gefest Web Home Server
    Simple Web Server with Graphical User interface. Server can be used without special knowledge. Any user can install and share folders in internet or local network. For sample you can share media files (music,video).
    Downloads: 3 This Week
    Last Update:
    See Project
  • 18
    ReAIM is an AOL Instant Messenger Proxy for iptables-based firewalls. It allows direct connections to be made to hosts behind an address-translating firewall. MSN and Windows Messenger are also supported.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 19
    Elmo is a feature-rich console mail client for UN*X power users. It integrates functionality commonly realised by separate pieces of software in other mailers.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 20
    An IRC bot written in PHP. It supports various plugins for channel services, with additional plugins easy to program. It features a full functional and tested PUG BOT for NS, CS and CSS, however other games are easy to add. Please note however, it does n
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    A geek code generator that generates 3.12 compatible geek code block. It lets you add your real age and many other functions not seen in other geek code generators. The geek code block is formatted dynamically, shown on screen and stored in a file
    Downloads: 1 This Week
    Last Update:
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  • 22
    Kommuni-K is a complete communication system. It gathers many funtions into one single modularized client/server system : - Instant messaging (ICQ - like) - Chatrooms - Global file sharing (napster-like) - Bookmark sharing - GUI to netsoul
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23
    SAMs emulates a basic answering machine. It maintains a single voicemail box that automatically detects faxes and is remotely accessable with a password. Also enables remotely activating an Internet connection, and changing the greeting.
    Downloads: 1 This Week
    Last Update:
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  • 24
    cdr-view

    cdr-view

    Webface witch extract CDR (Call Detail Records) from MySQL base.

    Webface witch extract CDR (Call Detail Records ) directly from MySQL base. May be used as SOHO billing system.
    Downloads: 1 This Week
    Last Update:
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  • 25
    The aim of this project is to produce a lightweight but reasonably secure PHP and MySQL Forum that can be easily installed to compatible web servers, and will be easily customisable for the end user as well as administrators.
    Downloads: 0 This Week
    Last Update:
    See Project
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