Open Source Chat Software
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Chat Software
View 152 business solutionsBrowse free open source Chat software and projects below. Use the toggles on the left to filter open source Chat software by OS, license, language, programming language, and project status.
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Telegram Desktop
Telegram Desktop messaging app
Telegram Desktop is the official C++/Qt-based cross-platform client for Telegram, implementing the full Telegram API and MTProto protocol for secure messaging, voice/video calls, file sharing, and chat features. It provides message sync across devices, supports themes, stickers, bots, and is actively maintained. -
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BeeBEEP (Free Office Messenger)
You can message and share files inside your intranet without a server.
BeeBEEP is a secure (encryption based on Rijndael Algorithm, AES) peer to peer office messenger. You can talk and send files with all your colleagues inside a local area network such of an office, home or internet cafe without a server. BeeBEEP works also with VPNs. This serverless application is indispensable in all those places where privacy and security an essential requirement. For more info visit: https://www.beebeep.net -
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AyuGram Desktop
Desktop Telegram client with good customization and Ghost mode.
AyuGram Desktop is a powerful, open-source Telegram desktop client designed for users who want deeper control, privacy, and customization. Built as a fork of Telegram Desktop, it extends the core experience with advanced features while staying fast and familiar. AyuGram focuses heavily on privacy tools like ghost mode and anti-recall to give users more control over their messaging behavior. The app offers extensive UI and font customization, allowing users to tailor the interface to their personal style. It also includes convenience features such as built-in translation, enhanced media previews, and streamer-friendly options. Available across Windows, macOS, and Linux, AyuGram Desktop is ideal for power users who want a more flexible Telegram experience. -
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Pidgin IM
A universal instant messaging (IM) program
See https://pidgin.im/about/ for more information. Pidgin is an instant messaging program which lets you log in to accounts on multiple chat networks simultaneously. It runs on Windows, Linux, and other UNIX operating systems. Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, MXit, Novell GroupWise Messenger, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It is written in C and makes heavy use of GLib and GTK+. Finch is a command line instant messaging program. It also lets you log in to accounts on multiple chat network simultaneously, and it is compatible with the same chat networks as Pidgin. It is written in C and makes heavy use of GLib and ncurses. -
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ArmCord
ArmCord is a custom client designed to enhance your Discord experience
ArmCord is a custom client designed to enhance your Discord experience while keeping everything lightweight. ArmCord is built as a standalone client and doesn't rely on the original Discord client in any way. Enjoy Vencord, Shelter and their many features, or have a more vanilla experience, it's your choice! ArmCord natively supports theming of the entire app, you can easily import BetterDiscord themes and manage them. ArmCord automatically blocks all of Discord's trackers; even without any client mods, you can feel safe and secure! Unlike other clients, ArmCord supports rich presence (game activity) out of the box thanks to arRPC. ArmCord has experimental mobile support for phones running Linux such as the PinePhone. While this is still far from an ideal solution, we're slowly trying to improve it. ArmCord is using a newer build of Electron than the stock Discord app. This means you can have a much more stable and secure experience, along with slightly better performance. -
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DC++
A Windows client for the Direct Connect networks
DC++ is an open source Windows client for the Direct Connect file sharing network. The DC network is a decentralized network, made up of individual servers (hubs) that users join to share files with other members on that hub. Each hub is individually run by a fellow user of the DC network, and may have certain themes to the content on the hub. Hub owners set up rules to regulate their hub as they see fit. -
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DiscordBotClient
A patched version of discord, with bot login support
A patched version of Discord, with bot login support. Discord Bot Client allows you to use your bot, just like any other user account, except for Friends and Groups. -
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Lightnovel Crawler
Generate and download e-books from online sources
Lightnovel Crawler is a tool for downloading web novels and similar fiction from supported online reading sites. It can save stories as offline e-books so users can read them on phones, tablets, computers, or e-readers. The project supports command-line use, standalone executables, Docker deployment, and a browser-based web interface. Users can paste a novel URL, choose chapter ranges, track download progress, and open results in a built-in reader. It supports common output formats such as EPUB, TXT, JSON, PDF, AZW3, MOBI, DOCX, RTF, and others, with optional Calibre integration for some conversions. It is intended for personal backups of content users legitimately have access to, not redistribution. -
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Zapret Discord YouTube Linux
Port zapret-discord-youtube from Flowseal and bol-van for easy to use
Zapret Discord YouTube Linux is a Linux adapter for using zapret-style strategies with Discord and YouTube connectivity issues. It is based on approaches from Flowseal and bol-van’s zapret tooling, with a focus on making setup easier for Linux users. The project provides scripts that download dependencies, launch an interactive control flow, manage configuration, and run selected traffic-handling strategies. It is tested on distributions such as Ubuntu, Debian, Arch Linux, and Gentoo. The repository requires nftables and supports multiple CPU architectures through automatic detection. It also includes automatic strategy tuning and service installation for systems using systemd, OpenRC, runit, s6, or dinit. -
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DiscordChatExporter
Saves Discord chat logs to a file
DiscordChatExporter is a cross-platform utility that allows users to export Discord chat histories into structured files for archival, analysis, or backup purposes. The tool connects to Discord accounts and retrieves message history from servers, channels, or direct messages, then converts the data into formats such as HTML or JSON. It is designed to preserve message structure, timestamps, attachments, and formatting so exported conversations remain easy to navigate and review. The project is widely used for moderation audits, research, community archiving, and personal record keeping. With both command-line and GUI usage patterns available through the ecosystem, it supports automation as well as manual workflows. Overall, DiscordChatExporter provides a reliable way to extract and preserve Discord communications outside the platform. -
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Blank Grabber
The most powerful stealer written in Python 3
Blank Grabber is an archived Python information-stealing malware project presented as a configurable grabber with a graphical builder. The repository lists capabilities related to credential theft, session theft, browser data collection, system information capture, screenshots, webcam capture, persistence, evasion, and exfiltration. Although the README includes an educational disclaimer, the tool’s stated behavior is clearly harmful outside isolated and authorized security research. It should not be used as a normal utility, administration tool, or learning project for general users. The safest way to describe it is as a malware sample for defensive analysis, detection engineering, and awareness of common stealer techniques. It is no longer actively maintained in the original repository. -
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YABDP4Nitro
Yet Another BetterDiscord Plugin for Nitro features
YABDP4Nitro is a BetterDiscord plugin focused on expanding Discord’s local client experience with Nitro-like interface enhancements. It includes options related to screen sharing quality, emoji usage, profile styling, client themes, and other customization features. The project is made for users who already run BetterDiscord and want a single plugin that groups many premium-style visual and usability tweaks. It is not affiliated with Discord, and its functionality may conflict with Discord’s platform rules or intended feature boundaries. Because it modifies the client experience, it should be treated as an unofficial customization tool rather than a supported Discord extension. It is best suited for users who understand BetterDiscord, plugin risk, and the limits of client-side changes. -
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gSOAP Toolkit
Development toolkit for Web Services and XML data bindings for C & C++
The gSOAP toolkit is an extensive suite of portable C and C++ software to develop XML Web services with powerful type-safe XML data bindings. Easy-to-use code-generator tools allow you to directly integrate XML data in C and C++. Serializes native application data in XML. Includes WSDL/XSD schema binding and auto-coding tools, stub/skeleton compiler, Web server integration with Apache module and IIS extension, high-performance XML processing with schema validation, fast MIME/MTOM streaming, SOAP and REST Web API development, WS-* protocols (WS-Security, WS-Policy, WS-ReliableMessaging, etc), XML-RPC and JSON. Licensed under GPLv2. Visit the developer center with guides, tutorials, and examples at www.genivia.com/dev.html The documentation of the toolkit, libraries, plugins and more is available at www.genivia.com/docs.html Commercial-use licenses and expert technical support services are available at competitive pricing levels, please visit www.genivia.com/products.html -
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Psi
Psi IM — Qt-based XMPP client
Psi is cross-platform powerful XMPP client designed for experienced users. There are builds available for MS Windows, GNU/Linux and macOS. -
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Dorion
Tiny alternative Discord client with a smaller footprint and support
Dorion is an alternative Discord client aimed and lower-spec or storage-sensitive PCs that supports themes, plugins, and more! Built with Rust on top of the Tauri library, Dorion uses your systems integrated Webview implementation. This means Dorion has a tiny installation size (~10mb) and works portably on Windows 11 and newer versions of Windows 10. Don't worry, you can still use it on Windows 7 too! -
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LAN Messenger
An intranet chat application that does not require a server.
LAN Messenger is a p2p chat application for intranet communication and does not require a server. A variety of handy features are supported including notifications, personal and group messaging with encryption, file transfer and message logging. -
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Revenge
Revenge is a client modification for Discord mobile
Revenge Bundle is the JavaScript bundle repository for Revenge, a Discord mobile client modification. It continues the Bunny project and focuses on customizing the Discord Android experience. The project lets users extend Discord through plugins, visual themes, custom fonts, and experimental feature access. The repository itself produces bundles that official Revenge loaders execute on supported Android setups. Installation is handled through loader projects such as root-based Xposed tooling or non-root management tools. It is best suited for advanced users who understand mobile client modification, unofficial Discord tooling, and the account risks that come with changing the app experience. -
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Psi+
Psi+ Project — development branch of Psi XMPP client
Psi is a cross-platform powerful XMPP client designed for experienced users. Psi+ is a development branch of Psi XMPP client. Previously is was a sort of fork but now just consider it as a space for nightly builds. -
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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. -
20
Session for Android
A Decentralized, Onion Routed, Private Messenger
Session Android is the official mobile client for Session, a privacy-first messaging protocol that enables secure, anonymous messaging without requiring phone numbers, email addresses, or centralized user accounts. Built natively for Android, the app lets users send and receive end-to-end encrypted text messages, voice notes, images, and attachments in both one-on-one and group chats, all while routing data through a decentralized onion-routing network designed to protect not just message content but also metadata like sender ID, timing, and network location. The Android client integrates seamlessly with Android’s notification system and background services so that you can stay connected without exposing your identity or compromising privacy, and it supports features such as message reactions, search within chats, profile and contact management, and local message storage encrypted at rest. -
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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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Abaddon
An alternative Discord client with voice support made with C++ and GTK
Alternative Discord client made in C++ with GTK. Abaddon tries its best (though is not perfect) to make Discord think it's a legitimate web client. Some of the things done to do this include: using a browser user agent, sending the same IDENTIFY message that the official web client does, using API v9 endpoints in all cases, and not using endpoints the web client does not normally use. There are still a few smaller inconsistencies, however. For example the web client sends lots of telemetry via the /science endpoint (uBlock origin stops this) as well as in the headers of all requests. Discord likes disabling accounts/forcing them to reset their passwords if they think the user is a spam bot or potentially had their account compromised. While the official client still often gets users caught in the spam filter, third party clients tend to upset the spam filter more often. If you get caught by it, you can usually appeal it and get it restored. -
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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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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. -
25
SmsForwarder
Monitors Android mobile phone text messages, calls, and notifications
SmsForwarder is an Android application designed to monitor incoming communications such as SMS messages, phone calls, and app notifications, and then automatically forward them to configured destinations based on user-defined rules, making it ideal for remote monitoring, backup, or automation scenarios. Users can set custom logic so that certain messages or notifications trigger forwarding to group chat bots (like DingTalk or enterprise WeChat), webhook endpoints, email, push services (PushPlus, Bark), Telegram bots, and other channels, allowing flexible integration with communication workflows. In addition to basic forwarding, the app’s rule-based engine can filter messages, enabling selective forwarding based on content, sender, or event type, and it can even push details like call logs or device battery status. The tool’s functionality extends to remote control features, which allow a paired server or client to query messages, calls, contacts, and more.