Open Source Linux Communications Software

Communications Software for Linux

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

  • Run applications fast and securely in a fully managed environment Icon
    Run applications fast and securely in a fully managed environment

    Cloud Run is a fully-managed compute platform that lets you run your code in a container directly on top of scalable infrastructure.

    Run frontend and backend services, batch jobs, deploy websites and applications, and queue processing workloads without the need to manage infrastructure.
    Try for free
  • Get More Customers For Your Auto Repair Shop Icon
    Get More Customers For Your Auto Repair Shop

    Drive the Right Business to Your Auto Repair Shop with KUKUI.

    Kukui's All-in-One Success Platform is a robust integrated marketing software solution that helps businesses in the automotive repair industry to grow their brand and take it to the next level. Kukui offers tools for conversion rate optimization, POS integration, email marketing and retention as well as revenue tracking.
    Learn More
  • 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: 106,167 This Week
    Last Update:
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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: 23,274 This Week
    Last Update:
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  • 3
    Matroska is an open standard audio/video container format. Visit our homepage at http://www.matroska.org
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    Downloads: 1,970 This Week
    Last Update:
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  • 4
    Ham Radio Control Libraries

    Ham Radio Control Libraries

    Library to control radio transceivers and receivers

    The Hamlib project's purpose is to develop flexible and portable shared libraries that offer a standardized API to control any radio oriented equipment through a computer interface.
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    Downloads: 587 This Week
    Last Update:
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  • #1 Solar Design and CRM Software for fast-growing solar businesses. Icon
    #1 Solar Design and CRM Software for fast-growing solar businesses.

    For Solar businesses looking for a design and CRM solution to create compelling solar proposals

    Create accurate proposals from anywhere in under 2 minutes using hi-res imagery, energy analysis and 3D shading tools in Pylon's intuitive design studio. Pylon is the only solar design software to give you high-resolution imagery in-app with no monthly fees. Identify dates of concern and track shading impact throughout the year using Pylon's award-winning 3D Solar Shading toolkit. Help your team better understand customer consumption patterns and maximize self-consumption using Pylon's load profile and interval data analysis. Analyze load profiles & interval data. Close more solar proposals with interactive Web & PDF proposals, native eSignatures and a payment processing gateway. Fully integrated solar CRM designed to integrate with your solar design software and convert proposals. Get 2-way SMS and email, communications with your team, lead management, and ready-made deal pipelines with Pylon Solar CRM.
    Learn More
  • 5
    Yet Another APRS Client
    Client software for users of the Automatic Packet Reporting System amateur radio network.
    Leader badge
    Downloads: 755 This Week
    Last Update:
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  • 6

    SyncTERM

    Cross-platform BBS (ANSI) Terminal

    A cross-platform ANSI-BBS terminal designed to connect to remote BBSs via telnet, rlogin, or SSH. Supports ANSI music and the IBM charset when possible. Will run from a console, under X11 using XLib, or using SDL.
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    Downloads: 358 This Week
    Last Update:
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  • 7
    Gpredict

    Gpredict

    Real time satellite tracking and orbit prediction

    Gpredict is a real-time satellite tracking and orbit prediction application. Gpredict can track an unlimited number of satellites and display the data in tables and various graphical view.
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    Downloads: 322 This Week
    Last Update:
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  • 8
    EasyModbusTCP/UDP/RTU .NET

    EasyModbusTCP/UDP/RTU .NET

    Modbus TCP, UDP and Modbus RTU client/server library

    Modbus TCP, Modbus UDP and Modbus RTU client/server library for .NET Supports Function Codes: - Read Coils (FC1) - Read Discrete Inputs (FC2) - Read Holding Registers (FC3) - Read Input Registers (FC4) - Write Single Coil (FC5) - Write Single Register (FC6) - Write Multiple Coils (FC15) - Write Multiple Registers (FC16) V5.6: Upload lates version - This will probably the last version for .NET Framework 4.0 - The next Version will be based on new .NET5 and redesigned V5.5: Bugfixes and MQTT Bridge removed V5.0: Major Bugfixes and Event Handlers changed V4.4 HF1: Bugfix excessive CPU-Load Modbus TCP Server V4.4: Bugfix Modbus RTU and MQTT V4.3: Bugfixes Modbus RTU Webview for Modbus Server Simulator and MQTT functionality for Server
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    Downloads: 98 This Week
    Last Update:
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  • 9
    LIRC

    LIRC

    Linux Infrared Remote Control

    LIRC is a package that supports receiving and sending IR signals of IR remote controls, adding functionality and flexibility to the basic support in the Linux kernel. Support for LIRC is ubiquitous in Linux HTPC applications; it's also packaged in all major Linux distributions. Despite it's name, LIRC also works on OSX.
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    Downloads: 165 This Week
    Last Update:
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  • Planfix: Manage Projects, Team's Tasks and Business Processes Icon
    Planfix: Manage Projects, Team's Tasks and Business Processes

    All-in-One Enterprise-Level Software is Now Available for SMB

    Planfix is like a souped-up business process management system for folks who really know their stuff. It's built to help you dive deeper and gives you more options than your run-of-the-mill project and task management systems. Best part? Even small businesses and non-profits can get in on the action.
    Learn More
  • 10

    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: 61 This Week
    Last Update:
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  • 11
    Convert text to International Morse Code. Input is ASCII text. Output can be: - . -..- - on the console, raw 8bit PCM suitable for piping to /dev/audio, .wav files or even (mp3|ogg). Good for headlines on your MP3 player or code practice.
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    Downloads: 62 This Week
    Last Update:
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  • 12
    trixbox CE is an easy to install, VOIP phone system based on the Asterisk PBX. trixbox is designed for home or office use. trixbox CE includes CentOS linux, mysql, and all the tools needed to run a business quality phone system. (formerly asterisk@home)
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    Downloads: 48 This Week
    Last Update:
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  • 13
    Makagiga

    Makagiga

    To-do manager, notepad, RSS reader...

    Makagiga is an open-source, easy-to-use, portable application for doing a variety of tasks, such as todo listing, text editing, or RSS reading. Plugins are used to implement its various capabilities.
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    Downloads: 34 This Week
    Last Update:
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  • 14
    DMX Library for Arduino

    DMX Library for Arduino

    DMX Library and usage examples for Arduino

    This Library includes a DMX Master, DMX Slave and various examples on how to use its implementation. This projects has been started to support the use of our Shielded DMX / RDM Shield for Arduino. The library is made available under the GNU Lesser General Public License If you would like to make contributions to the source code feel free to contact the project admin
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    Downloads: 40 This Week
    Last Update:
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  • 15
    tcpick is a textmode sniffer; it tracks tcp streams, shows the status, reassembles and saves the data captured in files or displays them in the terminal in different modes (ascii, hex..). There is a color-mode. Useful to get files passively.
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    Downloads: 99 This Week
    Last Update:
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  • 16
    This program allows you to use SSH, TELNET, VNC, FTP and any other Internet application from behind HTTP(HTTPS) and SOCKS(4/5) proxy servers. This "proxifier" provides proxy server support to any app.
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    Downloads: 37 This Week
    Last Update:
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  • 17
    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.
    Leader badge
    Downloads: 49 This Week
    Last Update:
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  • 18

    freediag: Vehicle Diagnostics Suite

    Mostly OBDII-compliant scantool and diagnostic software

    Vehicle diagnostic program including OBDII Scantool and support for certain manufacturer-specific controllers.
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    Downloads: 48 This Week
    Last Update:
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  • 19
    Easy to use, easy to install, actively maintained and actively supported, phpseclib is the best way to utilize SSH, SFTP and RSA in PHP.
    Downloads: 28 This Week
    Last Update:
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  • 20
    Libnodave is a library that provides the necessary functions to connect to and exchange data with Siemens S7 300/400 PLCs (200 family and S5 family now also supported). Can now also be used under Win32.
    Downloads: 26 This Week
    Last Update:
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  • 21
    RTLSDR Scanner

    RTLSDR Scanner

    A cross platform Python frequency scanning GUI for rtl-sdr

    A cross platform Python frequency scanning GUI for USB TV dongles, using the OsmoSDR rtl-sdr library. In other words a cheap, simple Spectrum Analyser. More information can be found at: http://eartoearoak.com/software/rtlsdr-scanner An installer and standalone versions for Windows are located here: https://github.com/EarToEarOak/RTLSDR-Scanner/releases Sources are available on GitHub: https://github.com/EarToEarOak/RTLSDR-Scanner ** The up to date installer is no longer maintained on this site and can now be found at https://github.com/EarToEarOak/RTLSDR-Scanner/releases **
    Leader badge
    Downloads: 36 This Week
    Last Update:
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  • 22
    Utility to test and create .sfv and test .par on Unix and Windows. Easy scripting. Also Handy in dos environment. Recursive directories handling. Tested files database.
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    Downloads: 78 This Week
    Last Update:
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  • 23

    OS X Portable Applications

    Portable OS X FOSS applications

    OS X FOSS portable applications are packaged so you can carry around on any portable device, USB thumb drive, iPod, portable hard drive, memory card, other portable device (or also on your internal hard disk), taking your preferences with you.
    Downloads: 21 This Week
    Last Update:
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  • 24
    AmphetaDesk is a cross-platform, highly customizable, news aggregator - it sits on your desktop, downloads the latest news that interests you, and displays them in a quick, easy to use and customizable webpage. No webserver required.
    Downloads: 30 This Week
    Last Update:
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  • 25
    Qtmm AFSK1200 Decoder

    Qtmm AFSK1200 Decoder

    AFSK1200 decoder

    Qtmm is a simple AFSK1200 decoder that uses the computer's sound card for input. It can be used to decode packet radio, APRS and telemetry from amateur radio satellites.
    Leader badge
    Downloads: 57 This Week
    Last Update:
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