Open Source Objective C Chat Software

WeChatExtension-ForMac is an unofficial plugin that enhances the WeChat desktop experience on macOS by adding new features such as message anti-recall, multi-instance login, auto-reply, and UI customization. Designed for users who want more control and functionality from their desktop WeChat client, this plugin requires patching the app and may violate WeChat’s terms of service.

WeChat macOS client enhances the Tweak dynamic library. Prevent message withdrawal, message list notification, system notification. Withdraw your messages normally. Unlimited opening of clients. Right-click the Dock icon to log in to the new WeChat account. Command line execution:open -n /Applications/WeChat.app. Message processing enhancement, supports any emoji export, supports QR code recognition. Supports right click to copy link directly. Open directly by the system default browser. No phone authentication required to reopen the app. UI interface settings panel, support for Alfred workflow, and support for Launchbar action. In order to reduce maintenance costs and ensure update speed, only the latest App Store version of the client is supported by default.

MobileIMSDK is a lightweight cross-platform instant messaging communication framework designed for real-time chat and push-style communication. It supports multiple client platforms, including iOS, Android, Java, HTML5, mini programs, UniApp, and HarmonyOS Next, with a Netty-based server side. The framework is notable for supporting UDP, TCP, and WebSocket protocols in the same open-source IM communication layer. It has been developed and refined over many years, making it a mature option for teams building custom messaging systems. MobileIMSDK focuses on the communication layer rather than a complete consumer chat app, so developers can build their own user interface and business logic on top of it. It is useful for mobile apps, web apps, enterprise messaging, live communication features, and custom push systems.

Adium is an Open Source, multi-protocol instant messaging application for Mac OS X. Adium supports AIM, ICQ, Jabber, MSN, Yahoo!, Google Talk, Bonjour, Gadu-Gadu, Novell Groupwise, SIP/SIMPLE (Text), and Lotus Sametime. Additionally, it supports all of these applications at once so, even if you have multiple IM accounts, you don't have to log into each account separately.

WeChatPlugin-MacOS is an unofficial plugin for the macOS version of WeChat, providing features like auto-reply, message anti-recall, and remote control. It injects custom functionality into the official WeChat client using macOS’s dynamic library loading, offering power-user features not present in the native app. This project has been widely used but is no longer actively maintained due to security and compatibility concerns.

X-Chat Aqua is X-Chat with an Aqua interface for MacOS X. X-Chat Aqua uses the irc engine from X-Chat, and is designed to look and feel like the GTK+ front end.

LimeChat is an IRC client written on RubyCocoa.

Project Libre is an open platform for chat bots, virtual agents, live chat, and more. It includes web and mobile services for Java, Android, iOS, and JavaScript. Project Libre includes an API, SDK, and user interface for live chat, chatrooms, forums, chat bots, virtual agents, and other services supported by the Bot Libre and Paphus servers. The hosted servers include: BOT libre! - http://www.botlibre.com - free chat bot creation and hosting platform FORUMs libre! - http://www.forumslibre.com - free embeddable forums LIVE CHAT libre! - http://www.livechatlibre.com - free live chat and chatrooms Paphus Live Chat - http://www.paphuslivechat.com - commercial live chat, chatroom, forums, and chat bot hosting service Also hosted on GitHub, https://github.com/paphus/Project-Libre

Fire is a multi-protocol instant messenger client for Mac OS X based on freely available libraries for each service. Currently Fire handles AOL Instant Messenger®, ICQ®, MSN® Messenger, Jabber, limited IRC, Yahoo!®, and Apple Bonjour communications.

A Yahoo! Chat client for use of Yahoo! chat without a web browser and slow Java applet. Cocoa through and through with features improving constantly.

A plugin for the popular OS X IRC client Colloquy providing Blowfish-encryption

Proteus is a multi service instant messaging application for Mac OSX. At the core of Proteus is this Service Controller! This controller provides a common interface for any number of applications to plug into. Each application that knows how to commun

Spychat is an easy chatting client for Spymac and Spymac News Network. Users can come and chat with friends as an alternative to the somewhat annoying shoutout box. With a determined team behind Spychat, we are improving everyday.

Extensible graphical IRC client for GNUstep and Mac OS X.

Inspiring Operating System replaces Windows 8, Vista, XP and Mac OS X. (Are you tired of nasty viruses, worms, trojans, rootkits, dialers, spyware, and malware?). If so, make a smart move and get a newbie friendly free Linux Operating System today!

Asynchronous networking framework for GNUstep and Mac OS X. Has built-in support for line-based protocols, IRC, and raw TCP/IP streams.

APM(All Platform Messenger) Is a Web Messenger Useing php/MySQL storage for quick and easy Messaging once Pre-Alfa has been competed the steps in the OS'es will begin This system is its own not working with other systems

This project will work on developing ad hoc network capabilities for Apple's iPod Touch and iPhone with goals of developing a chat program.

Instant messenger client for GNUstep. Using Björn Giesler's port of the AddressBook framework, Angelos accesses the user's addressbook to produce a buddylist with real names and photos.

A project to make a clean, efficient IRC client for Mac OS X in Cocoa.

Azonto is a Cross-Platform Mobile Messaging Application that allows users to share images, songs, videos, create and add each other to groups. It is for the trendy who wants to be on top of the mobile messaging game.

BlastServ is a plugin used with XChat and Mac OS X. It will be an IRC File Server (FServ or FServe), similar to SysReset for Windows or Obsidian. Fservs send files over DCC, and have an interface like FTP. They are a quick and easy way to transfer files.

BoomBot is a developer's framework for writing a bot connecting to the AIM network. It manages the network communication for the bots so that they can be easily written without worrying about AIM itself at all. Bots can be written in Objective-C or Lua.

Chat Messaging App Light and Dark Theme is a Flutter UI project for building a messaging app interface with both light and dark modes. It includes multiple screens that cover the core visual flow of a chat application, starting with a welcome screen and moving into authentication and conversation views. The project is intended as a design and implementation reference rather than a complete messaging backend. It demonstrates how Flutter layouts can be structured for chat lists, message screens, onboarding, sign-in, and sign-up experiences. The dual theme support makes it useful for learning how to design consistent interfaces across different visual modes. It is best suited for Flutter learners and mobile developers who need a clean UI base for chat-style apps.

ChatSecure is a free and open source messaging app that features OMEMO encryption and OTR encryption over XMPP. You can connect to your existing Google accounts or create new accounts on public XMPP servers (including via Tor), or even connect to your own server for extra security. Unlike other apps that keep you stuck in their walled garden, ChatSecure is fully interoperable with other clients that support OMEMO or OTR and XMPP, such as Conversations (Android), CoyIM (Desktop), and more. ChatSecure only uses well-known open-source cryptographic libraries to keep your conversations private. Other apps may make claims about "military grade" security but, without publicly auditable source code and verifiable end-to-end encryption, you cannot be truly safe.