Alternatives to CopilotKit

Open-source React chat UI components for LLM interfaces

Run LLMs in-browser with WebGPU — headless React hooks, just useLLM().

Open-source drag-and-drop builder for AI agents and chatbots—being sunset

Google's open-source framework for building agentic AI apps in JS, Go, Python & Dart.

Open-source MCP testing & app framework for building ChatGPT Apps and Claude Connectors.

Open-source React toolkit for generative UI — let LLM agents render your own components

Stateful AI chat API with built-in memory for app developers

Mirascope: Build LLM apps with decorators, observability, and full control.

Microsoft's framework for building production-grade agentic AI on Azure, with Python, C#, and Go SDKs and a GA Agent Harness runtime.

Enterprise agentic AI platform for compliant, orchestrated customer and employee automation

Vercel AI SDK is an open-source TypeScript toolkit for building AI apps with 100+ models, real-time streaming, fallbacks, and agents

Agentic AI for the entire DevSecOps lifecycle in GitLab.

Open-source agentic AI data assistant for SQL, code, and reports

Flowith is an agentic canvas for multimodal AI creation with persistent context.

Microsoft's open-source, code-first agent framework for stateful, data-intensive conversational tasks.

Open-source AI agent framework for cross-platform chat assistants.

Open-source AI agent that learns from you and automates tasks across 20+ chat platforms

Open-source Python framework for building production-ready conversational AI apps.

Open Harness is an open-source TypeScript SDK for building Claude Code-style agent harnesses with stateless primitives and composable middleware.

MIT-licensed Ruby gem that plugs MCP servers into RubyLLM chat workflows with idiomatic Ruby APIs

Open-source Java library for building LLM-powered apps with a unified API

One Ruby framework for all major AI providers—chat, images, audio, and tools.

LMQL is a programming language for LLM interaction with typed constraints, nested queries, and multi-backend portability.

Interactive 470-page ebook for building production LLM apps with Colab notebooks.

Open-source Python RAG framework to build LLM apps over your own data in minutes

An open-source Python framework that turns ordinary functions into AI-powered tools via simple decorators.

Zhipu GLM delivers open-source LLM models, MaaS APIs, and autonomous agents for Chinese enterprises and developers.

Open-source multi-agent framework for role-based software engineering

OpenAI Agents SDK: Lightweight Python framework for building multi-agent workflows with handoffs, sandboxing, and voice.

Agent evaluation and simulation platform that catches hallucinations before they reach production