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R2R Alternatives in 2026

The best 8 open-source R2R alternatives in 2026, ranked by GitHub stars. Find free, self-hosted replacements for R2R.

8 Alternatives
100% Open Source
Free To Self-Host

What are the best R2R alternatives in 2026?

The best open-source R2R alternatives in 2026 are Langflow, FastGPT, QAnything, MaxKB, AutoGPT. These tools cover the same use cases as R2R — production-ready rag framework with knowledge graph support — 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
Langflow ★ 153k+ Top Pick

Visual framework for building AI agents and RAG apps

agent workflow rag open-sourceMIT
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#2
FastGPT ★ 29k+ Top Pick

Knowledge-based platform for building RAG and AI workflows

agent rag workflow open-sourceApache-2.0
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#3
QAnything ★ 14k+ Top Pick

NetEase's local knowledge base Q&A system

agent rag local open-source
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#4
MaxKB ★ 12k+

Open knowledge base Q&A system with RAG and agents

agent rag knowledge-base open-source
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#5
AutoGPT ★ 186k+

Autonomous AI agent platform for complex task execution

agent autonomous open-source llmMIT
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#6
Dify ★ 153k+

Open-source LLM app development and orchestration platform

agent platform workflow open-sourceApache-2.0
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#7
MCP Servers ★ 90k+

Reference implementations for Model Context Protocol servers

agent mcp tools open-source
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#8
OpenHands ★ 85k+

Platform for AI software development agents

agent code autonomous open-sourceMIT
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Last updated: Aug 28, 2026 · Curated by AI Tools Hub Editorial · About · Contact · Privacy