Skip to content
Get packs

The best OpenUI alternatives

7 tools that do a similar job to OpenUI, 7 of them open source. Each entry says what it does and who it suits, so you can pick the one that fits instead of the most famous.

You're replacing

OpenUI

Open standard and toolkit for AI models to generate and stream live user interfaces.

  1. 1

    CopilotKit

    Open source · MIT · ★ 38.5k

    A TypeScript toolkit for building chat and generative UI on top of AI agents in web, mobile, and chat apps.

    Best for: Developers adding an AI assistant or agent interface to a React or Next.js app; Teams who want one agent backend to serve a web app, a mobile app, and Slack or Teams

    Full review OpenUI vs CopilotKit
  2. 2

    assistant-ui

    Open source · MIT · ★ 12.9k

    A TypeScript/React library for building AI chat interfaces in your app.

    Best for: React or Next.js developers adding an AI chat panel to an existing app; Teams that want to style chat UI with their own design system or shadcn/ui

    Full review OpenUI vs assistant-ui
  3. 3

    LangChain

    Open source · MIT · ★ 149k

    A Python framework for building AI agents and apps powered by language models.

    Best for: Python developers building LLM-powered applications; Teams that want to switch between model providers without rewriting code

    Full review OpenUI vs LangChain
  4. 4

    VoltAgent

    Open source · MIT · ★ 10.9k

    TypeScript framework and platform for building AI agents with memory, tools, workflows, and observability.

    Best for: TypeScript or Node.js developers building AI agents; Teams that want multi-agent setups with a supervisor routing tasks to sub-agents

    Full review OpenUI vs VoltAgent
  5. 5

    MetaGPT

    Open source · MIT · ★ 71.1k

    A framework where several LLM agents play software-company roles to build software from one sentence.

    Best for: Developers experimenting with multi-agent LLM workflows; Researchers interested in agent collaboration using standard operating procedures

    Full review
  6. 6

    Agent Lightning

    Open source · MIT · ★ 18.9k

    A training framework that uses reinforcement learning to improve AI agents running with their real tools.

    Best for: Researchers experimenting with reinforcement learning on LLM agents; Engineers who already have an agent and want to improve it with training data

    Full review
  7. 7

    Eliza

    Open source · MIT · ★ 19.8k

    An open-source TypeScript framework and app stack for building autonomous AI agents.

    Best for: Developers who want to build AI agents or plugins in TypeScript; People who want a personal AI assistant they can run on their own hardware or with their own provider keys

    Full review

How we pick: tools in the same category that solve the same problem, projects that name each other as alternatives, and open-source projects that describe themselves as an alternative to OpenUI. We don't take payment for placement.