Open-source alternatives to Textual

A Discord and SpaceBar :electron:-based client implemented without Discord API.

Mattermost is a self-hosted, enterprise-grade communication platform designed for organizations that require strict control over their internal data and messaging infrastructure. It functions as a centralized hub for real-time team interaction, offering persistent messaging, voice and video conferencing, and integrated project management tools within a single, private workspace. The platform is built to support high-security environments, including air-gapped deployments where public internet access is restricted or unavailable. The platform distinguishes itself through a focus on regulatory

The client of the future

A feature-rich TUI client for Discord

Mezon is a new way to communicate with your team. It's faster, better organized, better for WFH.

A native Mac app wrapper for WhatsApp Web

Mastodon is a self-hosted, decentralized social networking platform that functions as a microblogging application. It enables independent server instances to communicate and exchange social data through the standardized ActivityPub protocol, allowing users to participate in a global, interoperable network. The platform distinguishes itself through its federated architecture, which grants administrators full control over their community instances. This includes comprehensive tools for user moderation, account management, and the enforcement of community guidelines. The system is designed to ha

Misskey is a self-hosted, decentralized microblogging platform and federated social media server. It functions as a distributed content management system that allows users to communicate across multiple independent and interconnected server instances using the ActivityPub protocol. The platform distinguishes itself with a dynamic application engine that allows for the creation of interactive applications and custom page layouts using a scripting language. It also features a specialized markup language for rich text rendering, enabling the use of animations and custom styles for consistent con

Ferdium is a web-based service aggregator and unified communication client that consolidates multiple messaging accounts and web applications into a single desktop interface. It functions as a multi-service messaging wrapper and a cross-platform service dashboard, embedding various third-party tools within isolated browser views to eliminate the need for switching between separate applications. The application acts as a multi-account workspace manager, allowing users to organize related services into distinct contextual workspaces to separate professional and personal activities. It further d

Revolution IRC

Halloy is an IRCv3 chat client designed for real-time communication across multiple servers and networks. It implements modern protocol standards, including support for message tags, read markers, rich user metadata, and WebSocket connections. The project distinguishes itself through integrated anonymity and deep interface customization. It features native Tor and proxy routing to hide the user's connection origin and provides a themed environment with configurable window pane layouts, keyboard aliases, and custom color schemes. The client covers a broad range of capabilities, including chan

Message queue for AI coding assistants. Let your AI agents talk to each other.

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Little sweet addition to your WhatsApp Desktop

Multi-channel content distribution MCP server with idempotent state. Auto-publish to DEV.to, Hashnode, GitHub Discussions, Reddit, Bluesky; browser-fallback for Medium, LinkedIn, X/Twitter.

This Model Context Protocol (MCP) server provides a bridge between LLMs and Google Tasks, allowing you to manage your task lists and tasks directly through Claude.

The AgentMail Toolkit integrates popular agent frameworks and protocols including OpenAI Agents SDK, Vercel AI SDK, and Model Context Protocol (MCP) with the AgentMail API.

Adium is an open source and free instant messaging application for macOS that can connect to XMPP (Jabber), IRC and more.

Chat client for https://twitch.tv

Twitch Chat Client written in Java

Telegram MCP server powered by Telethon to let MCP clients read chats, manage groups, and send/modify messages, media, contacts, and settings.

A Model Context Protocol server implementation for ChatterBox, enabling AI agents to interact with online meetings and generate meeting summaries

Koler

Email MCP server with full IMAP SMTP support — read, search, send, manage, and organize email from any AI assistant via the Model Context Protocol

Mattermost MCP server to enable Claude to interact with Mattermost Workspaces

Telegram MCP for managing dialogs, messages, drafts, read statuses, and more.