Open Source C Communications Software

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

  • Keep company data safe with Chrome Enterprise Icon
    Keep company data safe with Chrome Enterprise

    Protect your business with AI policies and data loss prevention in the browser

    Make AI work your way with Chrome Enterprise. Block unapproved sites and set custom data controls that align with your company's policies.
    Download Chrome
  • 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.
    Download Now
  • 1
    BlackBelt Privacy Tor/i2p+WASTE+VidVoIP

    BlackBelt Privacy Tor/i2p+WASTE+VidVoIP

    Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP

    Open Source - GPLv3 inc images. *** PLEASE NOTE: There are now 2 seperate versions here. *** One is Pre Firefox 57. The other is Post Firefox 57. *** For those providing mirrors, please enable your users to realize this. Vidalia Based, Tor as a Service Solution. MicroSip: enables FREE PC to PC video calling with no account sign-up and no middleman server. WASTE: enables FREE Conference VoIP, chat, file transfer and support. *** AI Powered *** Tor/i2p: enables safer browsing. Tor/i2p Profile: Browse over Tor/i2p on Firefox (Vanilla, ESR), Waterfox (Classic, New), Palemoon , LibreWolf and legacy CyberFox. As with all versions of Tor - do not rely on this for strong anonymity. A usability enhanced Privacy Pack. Use alongside Tor Browser Bundle. An installer, for : Vista 32/64, Win7 32/64, Win8 32/64, Win10 32/64, Win11, Linux (Wine)
    Leader badge
    Downloads: 47 This Week
    Last Update:
    See Project
  • 2
    Qodem Terminal Emulator
    Qodem is a a terminal emulator that resembles the BBS-era Qmodem. Includes phonebook, scrollback, capture, X/Y/Zmodem, Kermit, ANSI (+ music) / Avatar / VT102 / Linux emulation, Unicode, and keyboard macros. Connects over serial, ssh, telnet, rlogin.
    Leader badge
    Downloads: 41 This Week
    Last Update:
    See Project
  • 3
    husky is a bunch of os-independent software for fidonet. It consitsts of tosser hpt, fileechoprocessor htick, message editor msged TE, libraries fidoconfig, smapi etc. Russian documentation may be found in Wiki http://sf.net/apps/mediawiki/husky/ The new development has been moved to https://github.com/huskyproject/
    Leader badge
    Downloads: 10 This Week
    Last Update:
    See Project
  • 4
    Command line torrent viewer and hash checker. Displays metadata and file catalog from a .torrent file. Offline verifies content hashes of downloaded files against torrent. Linux or Windows, Windows binary included.
    Leader badge
    Downloads: 14 This Week
    Last Update:
    See Project
  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
    Start Free
  • 5
    Steganography program. Crypture encrypts (1024 bit key) and stores files in Windows bitmap files. Only 6 KB, with no install required. Fills all bits with noise, to slip by standard steganalysis methods. Data header is encrypted and scattered as well.
    Downloads: 13 This Week
    Last Update:
    See Project
  • 6
    This project is to provide a repository of FTN applications, especially those that do not otherwise have public project space, for use on Fidonet Technology Networks (FTN) systems.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 7
    Emu10k1 sound driver
    Downloads: 1 This Week
    Last Update:
    See Project
  • 8
    The bitcollider is a small utility that generates bitprints and metadata tags from files for lookup/submission at the Bitzi community metadata project. For more details, please see http://bitzi.com.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 9
    The Collaborative Virtual Workspace is a software environment that provides a "virtual building" where teams can communicate, collaborate, and share information, regardless of their geographic location. For documentation, see the "Home Page" link above.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 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
    Common Hardware Recovery Solutions by Ukrainian-Russian network
    Downloads: 2 This Week
    Last Update:
    See Project
  • 11
    VSCP Protocol & Friends
    A project for a highly scalable protocol and framework and a collection of software tools for m2m (machine to machine communication) and IoT Internet of Things. The programs here works on Windows and Linux and are based around VSCP, The Very Simple Control Protocol. Repository is here: https://github.com/grodansparadis/vscp_software and here https://github.com/grodansparadis/vscp_firmware
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    The venerable MH message handling system: a command-line based mail user agent for UNIX/Linux developed at the RAND Corporation and the University of California, Irvine.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 13
    TeamBlibbityBlabbity is an attempt to document and provide an example implemention of the proprietary TeamSpeak 2 protocol.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 14
    A Windows NT / 2000 service to monitor the link quality of a list of IP addresses in a configuration file and produce an HTML file as output which indicates the link status. Uses ICMP ping. Log file and log file analyser for producing graphs included.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 15
    Windows program to control your Sony DVP-CX777ES 400-disc DVD player via its RS232 port connected to the serial port of your computer. Includes documentation and all source.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    Wraith is an open source IRC bot written in C++. It has been in development since late 2003. It is based on Eggdrop 1.6.12 but has since evolved into something much different at its core.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    Simple and flexible checkpassword interface packages. POP, APOP, Multiple maildirs per user, Multiple password per maildir and Multiple virtual domains are supported.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 18
    (portable/multi-platform) lightweight tcp/udp socket scripting. intended for (non-)experienced persons to be able to use to automate situations, built on a word-to-word ruleset response system.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    A free wsx to lopster server.list tool, released to the public domain. It do the work fast and simply, however it's fully configurable. It runs in console, with a standard gnu synopsis. It works good on all wsx files version. Written in C.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Advanced Web Hosting Control Panel Project needs PHP developers
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Communication protocol for advanced clients of talker Atlantis (now running at atlantis.talker.sk). No implementation. No source code. Only specfication.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    This is an P2P Chatclient for everyone and open source. It was created for people to see an example for a chat-programm and learn how to networkprogramming works by looking at our code. We hope you enjoy it.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Public domain portable Naive Bayesian message filter aimed towards C programmers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    CBAR - a bar code reader lib
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    CCOM - a lib for serial port interface
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • Next
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.