Open Source Communications Software - Page 5
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Communications Software
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STAR
Travel light, run fast, just works! Devuan powered!
This is the home of Star live distro powered by Devuan stable linux (Non-Systemd). Images to choose from: 64 bit - Xfce (minimal), Fluxbox, Openbox, Jwm, i3, Cli 32bit - Jwm, Cli There is a small selection of applications, including: web browser, text editor, image viewer, pdf viewer, file manager, terminal, media player. If you like to customize your desktop, then this is the distro you you! This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. -
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SimpleX
The first messaging platform operating without user identifiers
Other apps have user IDs: Signal, Matrix, Session, Briar, Jami, Cwtch, etc. SimpleX does not, not even random numbers. This radically improves your privacy. The video shows how you connect to your friend via their 1-time QR-code, in person or via a video link. You can also connect by sharing an invitation link. Temporary anonymous pairwise identifiers SimpleX uses temporary anonymous pairwise addresses and credentials for each user contact or group member. It allows to deliver messages without user profile identifiers, providing better meta-data privacy than alternatives. Many communication platforms are vulnerable to MITM attacks by servers or network providers. To prevent it SimpleX apps pass one-time keys out-of-band when you share an address as a link or a QR code. Double-ratchet protocol. OTR messaging with perfect forward secrecy and break-in recovery. NaCL cryptobox in each queue to prevent traffic correlation between message queues if TLS is compromised. -
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Thunderbird for iOS
Open Source Email App for iOS
Thunderbird iOS is the official iPhone and iPad email client offering from the Thunderbird project, bringing the capabilities of a feature-rich, open-source email experience to iOS devices with native UI and Apple platform integrations. The app gives users a powerful tool for managing multiple email accounts, including IMAP and POP3 configurations, and supports modern authentication flows like OAuth for popular providers. Designed with mobile usability in mind, it includes familiar gestures, thread views, swipe actions, attachment previews, and integrated search so users can stay productive on the go. It also handles common email needs like organizing with folders, setting flags, and filtering messages, while respecting platform norms for notifications, background fetch, and data usage. By maintaining a connection to the desktop Thunderbird project’s ethos, the iOS client places emphasis on transparency, extensibility, and user control. -
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Alfresco Community Edition
Open Source Enterprise Content Management ECM
The open source Enterprise Content Management (ECM) software that handles any type of content, allowing users to easily share and collaborate on content. -
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Mailspring
A faster, leaner email client and fork of Nylas Mail
Mailspring is a fast and lean mail client that’s a new version of Nylas Mail. It’s maintained by one of Nylas Mail’s original authors, with plenty of great features and enhancements such as a new C++ sync engine that allows it to use 50% less RAM. Heavy dependencies have also been removed and the package manager rewritten for even greater speed. Written in TypeScript with Electron and React, it is cross-platform (macOS, Windows and Linux) and designed to be easy to extend. -
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MRBS is a system for multi-site booking of meeting rooms. Rooms are grouped by building/area and shown in a side-by-side view. Although the goal was initially to book rooms, MRBS can also be used to book any resource; computers, planes, whatever you want
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theHarvester
E-mails, subdomains and names
theHarvester is a very simple to use, yet powerful and effective tool designed to be used in the early stages of a penetration test or red team engagement. Use it for open source intelligence (OSINT) gathering to help determine a company's external threat landscape on the internet. The tool gathers emails, names, subdomains, IPs and URLs using multiple public data sources. -
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BiglyBT
Feature-filled Bittorrent client based on the Azureus open source
BiglyBT is a fully-featured, open-source BitTorrent client based on the former Vuze/Azureus codebase. It offers extensive functionality without ads, spyware, or paid features, making it a favorite for advanced users. BiglyBT includes detailed torrent management tools, built-in swarm merging, VPN detection, I2P support, and streaming capabilities. It’s highly customizable and supports a wide range of plugins, automation tools, and scheduling options. The client runs on Java and is available across major desktop platforms. -
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GoofCord
Take control of your Discord experience with GoofCord
Take control of your Discord experience with GoofCord, the highly configurable and privacy-focused Discord client. Privacy first: GoofCord blocks all tracking and uses multiple techniques to improve your privacy and security. Tailor your client to your liking with GoofCord's plethora of configuration options. Enjoy a smooth and lag-free chatting experience with GoofCord's superior speed and responsiveness. GoofCord is built as a standalone client and doesn't rely on the original Discord client in any way. GoofCord supports other client mods such as Vencord or Shelter which allows you to use plugins and themes. -
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Nicotine+
Graphical client for the Soulseek peer-to-peer network
Nicotine+ is a free and open-source graphical client for the Soulseek peer-to-peer file-sharing network, popular for its focus on sharing music and niche content. Built in Python with a Qt-based GUI, Nicotine+ offers a lightweight yet feature-rich experience for users looking to share and discover files in a decentralized, user-governed environment. It includes search capabilities, bandwidth throttling, chat rooms, and user-to-user messaging, supporting a vibrant community of digital collectors and music lovers. -
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Elastix
Unified Communications Server
Elastix is a software-based PBX powered by 3CX and based on Debian. An open-standards solution, Elastix is an easy to install and manage UC system compatible with popular IP phones, gateways and SIP trunks. Elastix is complete with unified communications features such as integrated WebRTC video conferencing, chat, presence and softphones and smartphone clients for Windows, Mac, iOS and Android. -
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Miranda IM
A smaller, faster, and easier IM client
Miranda IM is an open source, multi-protocol instant messaging client designed to be very light on system resources, extremely fast and customizable. A powerful plugin-based architecture make Miranda IM one of the most flexible clients on the planet. -
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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. -
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NetTime is a simple, free time synchronization client for Win32, providing a client and server for SNTP and RFC868. Its main claim to fame is that it is small, simple and unobtrusive.
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This project is for www.zpoc.com. It will be used to connect only to ZPoc's network of servers. This is a christian music only file sharing client with chat.
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IRremote Arduino Library
Infrared remote library for Arduino, send and receive infrared signals
This library enables you to send and receive using infra-red signals on an Arduino. You can use any pin for sending now like you are used to receiving. Simultaneous sending and receiving. See the SendAndReceive example. No more need to use 32-bit hex values in your code. Instead, a (8 bit) command value is provided for decoding (as well as a 16-bit address and a protocol number). Protocol values comply to protocol standards, i.e. NEC, Panasonic, Sony, Samsung, and JVC decode and send LSB first. Supports more protocols, since adding a protocol is quite easy now. Better documentation and more examples. Compatible with tone() library, see ReceiveDemo. Supports more platforms, since the new structure allows to easily add a new platform. Feedback LED also for sending. Ability to generate a non-PWM signal to just simulate an active low receiver signal for direct connection to existent receiving devices without using IR. -
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Mumble
Low-latency, high quality voice chat for gamers
Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming. It includes game linking, so voice from other players comes from the direction of their characters, and has echo cancellation so the sound from your loudspeakers won't be audible to other players. -
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Ares Galaxy
A free peer-to-peer (P2P) BitTorrent file sharing client
Ares Galaxy is a free, open source BitTorrent and chat program that uses its own decentralized supernode/leaf network. Ares Galaxy has a simple, quick access interface with a built in audio/video viewer. Ares allows you to share any digital file including images, audio, video, software, documents, etc. You may now easily publish your files through the Ares’ peer-to-peer (P2P) network. As a member of the virtual community, you can search and download just about any file shared by other users. The latest versions also support the BitTorrent protocol and Shoutcast radio stations. -
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RSS Guard
Feed reader (and podcast player) which supports RSS/ATOM/JSON
RSS Guard is a simple RSS/ATOM feed reader for Windows, Linux, BSD, OS/2 or macOS which can work with RSS/ATOM/JSON/iCalendar/Sitemap feeds as well as many online feed services. RSS Guard is also a podcast player as it can play everything via its built-in mpv-based (or ffmpeg-based) media player. -
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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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KB1OIQ - Andy's Ham Radio Linux
Install ham radio software on Debian Live, RPi OS, or Ubuntu Linux
Latest Version: - Version 26e: November 2025 Version 26 ======== Version 26 can be installed on top of Debian Live, Raspberry Pi OS, or any supported flavor of Ubuntu Linux. The supported Linux flavors are listed in the GETTING_STARTED document. An installation script does all of the work. Please download and READ the installation instructions: https://sourceforge.net/projects/kb1oiq-andysham/files/v26e/GETTING_STARTED Watch a video of Andy (KB1OIQ) as he talks about AHRL during a ham radio convention in MA in the summer of 2025: https://www.youtube.com/watch?v=hwuKZK1dKcU&t=2086s Several videos of Andy's complete AHRL presentation can be found on YouTube. Here is one made in March 2026: https://youtu.be/xv9YnREmeAA?si=yMTX8yJsQFyeJG0i -
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URH (Universal Radio Hacker)
Universal Radio Hacker: Investigate Wireless Protocols Like A Boss
Universal Radio Hacker (URH) is a tool for investigating unknown wireless communication protocols. It supports signal capturing, decoding, modulation analysis, and protocol reverse engineering through an intuitive graphical interface. URH is used in research, security testing, and hobbyist electronics for understanding proprietary RF systems, IoT device communication, and embedded protocols. -
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PHPMailer
A full-featured email creation and transfer class for PHP
A PHP email creation and transport class featuring file attachments, SMTP servers, CCs, BCCs, HTML messages, word wrap, and more. Sends email via sendmail, PHP mail(), QMail, or with SMTP. PHPMailer is used by many popular PHP development frameworks and is one of the most popular email-generating and sending libraries in the world. This project is defunct here on sourceforge – it's now maintained on Github at https://github.com/PHPMailer/PHPMailer. Documentation is available at https://github.com/PHPMailer/PHPMailer/wiki
