Alternatives to LlamaIndex

LlamaIndex and 3 alternative tools evaluated on the Tekai technology radar.

LlamaIndex

Subject

Open-source MIT-licensed data framework for building RAG and document agent applications on top of LLMs, with 38k+ GitHub stars, built-in evaluation utilities, and a commercial cloud platform; $19M Series A in March 2025.

open-source MIT

trial

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Alternatives

LangChain

Open-source framework and commercial platform for building LLM-powered applications and stateful agent workflows.

vendor MIT (core libraries) / Commercial (LangSmith, LangGraph Cloud)

trial

Dify

An open-source platform for building LLM-powered applications via a visual drag-and-drop workflow builder with built-in RAG, agents, and prompt versioning.

open-source Apache-2.0 with additional restrictions (not pure open source)

assess

RAGFlow

Open-source Apache-2.0 RAG engine by InfiniFlow specializing in deep document understanding (OCR, layout analysis, table extraction) with hybrid search, visual chunking review, and an expanding agentic workflow canvas; 78.5k+ GitHub stars.

open-source Apache-2.0

assess

Comparison Summary

Tool	Radar	Type	License
LlamaIndex	trial	open-source	MIT
LangChain	trial	vendor	MIT (core libraries) / Commercial (LangSmith, LangGraph Cloud)
Dify	assess	open-source	Apache-2.0 with additional restrictions (not pure open source)
RAGFlow	assess	open-source	Apache-2.0

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