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CopilotKit Alternatives in 2026

The best 8 open-source CopilotKit alternatives in 2026, ranked by GitHub stars. Find free, self-hosted replacements for CopilotKit.

8 Alternatives
100% Open Source
Free To Self-Host

What are the best CopilotKit alternatives in 2026?

The best open-source CopilotKit alternatives in 2026 are ChatGPT Next Web, AnythingLLM, ChatALL, big-AGI, Open WebUI. These tools cover the same use cases as CopilotKit — react framework for in-app ai copilots and chatbots — with the advantage of being open-source, free to self-host, and backed by active communities. Top picks are ranked by GitHub stars and community adoption, so you can find a drop-in replacement that fits your workflow.

#1
ChatGPT Next Web ★ 89k+ Top Pick

Cross-platform ChatGPT/Gemini UI with one-click deploy

chat web-ui open-source productivityMIT
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#2
AnythingLLM ★ 65k+ Top Pick

All-in-one desktop and Docker AI application

rag chat productivity open-sourceMIT
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#3
ChatALL ★ 16k+ Top Pick

Chat with multiple AI bots simultaneously to find the best answer

chat multi-model productivity open-source
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#4
big-AGI ★ 7.1k+

Generative AI suite for professionals with personas and tools

chat productivity multi-model open-source
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#5
Open WebUI ★ 149k+

User-friendly self-hosted web UI for Ollama and LLMs

chat web-ui local open-sourceMIT
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#6
LobeChat ★ 82k+

Modern open-source ChatGPT / LLMs UI framework

chat web-ui open-source llmApache-2.0
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#7
GPT4All ★ 77k+

Run powerful and customized LLMs locally

llm local open-source chatMIT
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#8
Screenshot to Code ★ 74k+

Converts screenshots to clean HTML/CSS/JS code using AI

code productivity vision open-sourceMIT
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More Alternatives

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Last updated: Aug 28, 2026 · Curated by AI Tools Hub Editorial · About · Contact · Privacy