langchain-chat-nextjs and langchain-ui
These are **competitors** — both provide web UI frontends for building chat applications with LangChain, offering alternative approaches to the same core problem of wrapping LangChain backends with a conversational interface.
About langchain-chat-nextjs
zahidkhawaja/langchain-chat-nextjs
Next.js frontend for LangChain Chat.
Provides a React-based chat interface built with Next.js API routes that connect to LangChain backends for conversational AI. Leverages Next.js's file-based routing system with dedicated `/api/chat` endpoint for LangChain integration, enabling rapid prototyping of language model applications. Designed as the frontend counterpart to the LangChain Chat backend, offering a minimal scaffold for building chat UIs on top of LangChain's agent and memory systems.
About langchain-ui
homanp/langchain-ui
🧬 The open source chat-ai toolkit
⚠️ **Note: This project is unmaintained.** The maintainers have moved to [Superagent](https://github.com/homanp/superagent). --- Built on LangChain, this no-code interface enables deploying custom chatbots with external data sources, ChatGPT plugins, and configurable prompts—each with a dedicated API endpoint. The frontend uses Next.js 13 with Chakra UI and Prisma, while agent functionality delegates to a separate Python backend (LangChain UI API) for enhanced capability parity. Supports custom authentication providers, usage quotas, and multi-site embedding with themeable interfaces.
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