Reachat is an open-source UI library for building chat interfaces in React applications. Instead of designing and coding chat UI elements from scratch, developers can use prebuilt components like message threads, session lists, input boxes, and conversation panels.
The library focuses on the frontend layer of conversational AI apps. It does not lock you into a specific AI model, backend, or API. You can connect it to OpenAI, Anthropic, local LLMs, or any custom backend.
It’s built with React, TypeScript, and Tailwind CSS, which makes it easy to style and extend.
Building a production-ready chat interface takes more work than it appears. Developers need message rendering, conversation history, session management, input handling, streaming responses, markdown support, file uploads, and responsive UI behavior.
Reachat handles many of those pieces out of the box.
That means teams building AI products—like chatbots, copilots, or AI assistants—can focus on backend logic and AI workflows instead of UI plumbing.
