CopilotKit
By CopilotKit
Open-source framework, around 37,500 GitHub stars, for wiring AI agents into your own application as chat panels, inline suggestions, and approval workflows across React, Vue, Angular, React Native, Slack, and Teams frontends, backed by any agent framework including LangChain, CrewAI, PydanticAI, or a raw model API; the team also maintains the AG-UI protocol for standardizing how front ends talk to agents. Core framework is free and open source; a hosted Copilot Cloud layer adds managed infrastructure.
Best for
- adding an AI chat or copilot panel to an existing app
- connecting a LangChain or CrewAI agent to a real user interface
- building approval-gated actions an agent can propose but a user confirms
- one integration surface across React, Vue, Angular, and mobile
- standardizing on the AG-UI protocol for agent-to-frontend communication
- Sep 23, 2026Added to the coding category: open-source framework, roughly 37,500 GitHub stars, for wiring AI agents into your own application as chat panels, inline suggestions, and approval workflows across React, Vue, Angular, React Native, Slack, and Teams, backed by any agent framework; the team also maintains the AG-UI protocol. Core framework is free; a hosted Copilot Cloud layer adds managed infrastructure.
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