Chat SDK is now open source and available in public beta. It's a TypeScript library for building chat bots that work across Slack, Microsoft Teams, Google Chat, Discord, GitHub, and Linear — from a single codebase.
Lars Grammel on Twitter / X
Finally - almost 5 months of work, our biggest release so far.Completely revamped, type-safe AI chat is a game changer imo. I don't know any other framework that has full stack support for this. Hope it will enable you to build the next generation of AI applications. https://t.co/BYM4HIuNAr— Lars Grammel (@lgrammel) July 31, 2025
chatmail/core
Chatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧
LibreChat | Proxmox VE Helper Scripts
LibreChat is an open-source AI chat platform that supports multiple AI providers including OpenAI, Anthropic, Google, and more. It features conversation…
danny-avila/LibreChat
Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message search, Code Interpreter, langchain, DALL-E-3, OpenAPI Actions, Functions, Secure Multi-User Auth, Presets, open-source for self-hosting. Active
Introducing Chatto
I'm building an Open Source group chat application that's simple to self-host, familiar to use, and easy to customize.
TanStack/ai
🤖 Type-safe, provider-agnostic TypeScript AI SDK for streaming chat, tool calling, agents, and multimodal apps across OpenAI, Anthropic, Gemini, React, Vue, Svelte, and Solid.
agents-chat
Multi-user streaming AI chats built using RedwoodSDK RSCs, Cloudflare Agents, Vercel AI SDK, and OpenAI Agents SDK.
@levelsio on Twitter / X
Telegram has 1 billion usersIt's the #1 or #2 chat app in most countries around the worldComplete blindspot for most AmericansAnd NOBODY uses it for its encryption (or lack of it), we use it because it has the best UX of any chat app!Also best API to develop bots with https://t.co/5k9mmJsVb2 pic.twitter.com/Up34W9Wifs— @levelsio (@levelsio) May 28, 2024
LibreChat - The Open-Source AI Platform
LibreChat brings together all your AI conversations in one unified, customizable interface.
Chatto Dev Instance
The development instance of Chatto, the lean, self-hostable chat app. Come try the latest builds and hang with the team.
Jan - Open-Source ChatGPT Replacement - Jan
Jan is an open-source alternative to ChatGPT. Run open-source AI models locally or connect to cloud models like GPT, Claude and others.
Building your own Delta Chat bot is easy. Read on for some basic information and maybe have a look at our example bots.
I don't pay for ChatGPT, Perplexity, Gemini, or Claude – I stick to my self-hosted LLMs instead
There's no point in relying on AI tools when my local LLMs can handle everything
Why Chatbots Are Not the Future of Interfaces
Unfortunately for the countless hapless people I've talked to in the past few months, this was inexorable. Ever since ChatGPT exploded in popularity, my inner designer has been bursting at the seams.
Tinfoil Private Chat
Private AI chat application supporting open source models through Tinfoil