reachat: Supplies an open-source React UI component library specifically for assembling conversational LLM and chat interfaces. CopilotKit records 403,148 monthly visits with +199.4% month-over-month growth and Freemium pricing. reachat records 585 monthly visits with -14.9% growth and Free pricing.
Open-source frontend stack for building AI agents and copilots inside your own product
Open-source React chat UI building blocks — ship an LLM interface in hours, not weeks.
| Dimension / Metric | | |
|---|---|---|
| Official Domain | copilotkit.ai | reachat.dev |
| Pricing Model | Freemium | Free |
| Monthly Visits | 403.15K (403,148) | 585 (585) |
| MoM Traffic Delta | +268.49K (+199.4%) | -102 (-14.9%) |
| Primary Market & Share | 🇺🇸 United States (18.9%) | 🌐 Global (—) |
| Direct Visits / mo | 179.26K | 231 |
| User Rating | 4.6 | 4.3 |
| Supported Platforms | Website | Website |
Open-source frontend stack for building AI agents and copilots inside your own product
Ship a working copilot UI in minutes with drop-in components for React, Angular, Vue, iOS, and Android, or go fully headless for total control over rendering.
A general-purpose bi-directional link between your app and any agent backend, with integrations for the OpenAI Agents SDK, Claude Agent SDK, LangChain, Google ADK, AWS Strands, Mastra, and many more.
Agents return real UI — charts, forms, tables, and approval prompts rendered with your own design system on the same screen the user is already working in.
Let agents read and write application state, call your frontend functions, and pause for human approval before sensitive actions are executed.
Open-source React chat UI building blocks — ship an LLM interface in hours, not weeks.
Tune the chat interface to match your product with configurable components and theming options rather than fighting a locked-down widget.
Handle file uploads, embedded content and markdown formatting out of the box, so conversations can carry richer information than plain text.
Switch between different AI models, or mix several models inside the same interface to serve different tasks.
An intuitive but flexible API designed so you can compose custom chat experiences without disproportionate glue code.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceA minimal, extensible terminal coding agent you can reshape
Free / Open-sourceA minimal, extensible terminal coding agent you can reshape
Free / Open-sourceOpen-source control plane for orchestrating coding agents
SpecialistCombines conversational workflow drafting with visual flow builders, focusing on workflow automation rather than frontend copilot embedding.
SpecialistCombines conversational workflow drafting with visual flow builders, focusing on workflow automation rather than frontend copilot embedding.
SpecialistIDE extension providing model-agnostic AI coding assistance rather than a frontend UI component library for web applications.
SpecialistFocuses on Python-based agent building and deployment rather than frontend React component integration for web applications.
Delivers a managed platform for building and deploying conversational agents, though less focused on open-source frontend React UI kits.
Delivers a managed platform for building and deploying conversational agents, though less focused on open-source frontend React UI kits.
AI design engineer that ships production-ready frontend
AI design engineer that ships production-ready frontend
Free / Open-sourceProvides an open-source TypeScript framework where agents and user interfaces share capabilities, aligning with CopilotKit's architecture.
Free / Open-sourceProvides an open-source TypeScript framework where agents and user interfaces share capabilities, aligning with CopilotKit's architecture.
Free / Open-sourceCopy-owned React components and blocks that run AI models on-device, with no server and no API key.
Free / Open-sourceCopy-owned React components and blocks that run AI models on-device, with no server and no API key.
SpecialistCustom AI chatbot and support agent builder designed for omnichannel embedding rather than developer framework integration.
SpecialistCustom AI chatbot and support agent builder designed for omnichannel embedding rather than developer framework integration.
Free / Open-sourceOpen-source, plugin-rich chat interface for every major AI model
Free / Open-sourceOpen-source, plugin-rich chat interface for every major AI model
