tokens&
For enterprises
Submit
Sign in
tokens&

Build better AI stacks, claim useful opportunities, and give AI infrastructure companies a source-labeled adoption readout they can trust.

For buildersFor enterprises

Product

  • Startup credits and perks
  • Agent Skills
  • Submit project, tool, product, or perk

Enterprise

  • Start free company workspace

Community

  • Community
  • Newsletter
  • Events
Xin

© 2026 tokensand, LLC. All rights reserved.

  • Terms
  • Privacy
  • Security
  • Data Processing
  • Status
  1. Home
  2. Best Tools
  3. Best AI Tools for RAG

Best AI Tools for RAG

Discover the best retrieval-augmented generation tools and frameworks for building AI applications.

LangChain logo
LangChain

RAG Frameworks· langchain.com

Open source

Framework for composing agents, RAG workflows, retrieval, and tool calls.

146,206
Open source

Frequently Asked Questions

What are the best ai tools for rag?

tokens& tracks ai tools for rag with product fit, docs, pricing, alternatives, open source status, public proof, and adoption evidence where available.

How do we rank ai tools for rag?

Catalog ordering uses available stars, reviews, benchmarks, funding, featured status, saves, adoption-event counts, and product metadata. Those event counts do not establish verified adoption or retention. AgentRank is a separate ranking with its own published methodology. Sponsored suggestions, when present, are labeled.

For adoption evidence, see AgentRank rankings and the published methodology.

LlamaIndex logo
LlamaIndex

RAG Frameworks· llamaindex.ai

Open source

Data framework for document ingestion, retrieval, and RAG over private data.

52,139
Open source
Firecrawl logo
Firecrawl

RAG Frameworks· firecrawl.dev

Freemium

Web data API and open-source crawling stack for turning sites into clean markdown, structured data, and agent-ready content for RAG and automation pipelines.

179,620
Open source
Microsoft MarkItDown logo
Microsoft MarkItDown

RAG Frameworks· github.com

Open source

Microsoft MarkItDown is an open-source document conversion tool that turns files and office documents into Markdown for LLM, RAG, and text-analysis pipelines.

162,770
Open source
Pathway logo
Pathway

RAG Frameworks· pathway.com

Freemium

Python framework for streaming ETL, real-time analytics, LLM pipelines, and live RAG systems.

62,773
Open source
Context7 logo
Context7

RAG Frameworks· context7.com

Freemium

Up-to-date, version-specific documentation retrieval for AI coding agents through MCP and API workflows.

61,941
Open source
Docling logo
Docling

RAG Frameworks· docling-project.github.io

Open source

IBM-backed document conversion toolkit for preparing PDFs and complex documents for generative AI and RAG pipelines.

62,668
Open source
RAGFlow logo
RAGFlow

RAG Frameworks· ragflow.io

Open source

RAGFlow is an open-source RAG engine with document understanding, hybrid search, and agent orchestration for building production retrieval workflows over complex files.

84,233
Open source
Graphify logo
Graphify

RAG Frameworks· github.com

Open source

Local-first code and document intelligence tool that builds queryable knowledge graphs with traceable extracted and inferred edges for coding agents.

97,311
Open source
Crawl4AI logo
Crawl4AI

RAG Frameworks· crawl4ai.com

Open source

Open-source crawling and extraction framework for feeding RAG and agent pipelines with markdown, structured data, and browser-backed collection flows.

68,921
Open source
claude-mem logo
claude-mem

RAG Frameworks· github.com

Open source

Open-source persistent memory layer that captures, compresses, and retrieves coding-agent session context across Claude Code, Codex, Gemini, OpenCode, and other agents.

88,784
Open source
LightRAG logo
LightRAG

RAG Frameworks· lightrag.github.io

Open source

LightRAG is a graph-based retrieval framework and API server for building fast knowledge-graph RAG systems that combine vector and graph retrieval.

37,295
Open source
Onyx logo
Onyx

RAG Frameworks· onyx.app

Open source

Open-source AI knowledge platform for enterprise search, chat, connectors, and RAG over internal data.

30,726
Open source
Haystack logo
Haystack

RAG Frameworks· haystack.deepset.ai

Open source

Open-source framework for production LLM applications, RAG pipelines, search, and agentic workflows.

25,642
Open source
Khoj logo
Khoj

RAG Frameworks· khoj.dev

Freemium

Self-hostable AI second brain for answers over documents and the web, custom agents, automations, and deep research.

35,507
Open source
DSPy logo
DSPy

RAG Frameworks· dspy.ai

Open source

Python framework for programming and optimizing LLM systems with structured signatures, modules, teleprompters, RAG pipelines, and agents.

35,358
Open source
Supermemory logo
Supermemory

RAG Frameworks· supermemory.ai

Freemium

Memory and context API for adding long-term recall, RAG, and user profiles to AI agents.

27,624
Open source
Kotaemon logo
Kotaemon

RAG Frameworks· cinnamon.github.io

Open source

Open-source RAG application framework for building document chat and knowledge-base assistants over private files.

25,524
Open source
Graphiti logo
Graphiti

RAG Frameworks· help.getzep.com

Open source

Temporal knowledge graph memory layer for AI agents that need evolving user, entity, and relationship context over time.

28,243
Open source
DB-GPT logo
DB-GPT

RAG Frameworks· dbgpt.site

Open source

Open-source AI-native data app framework for text-to-SQL, RAG over databases, and private data agents.

19,943
Open source
Cognee logo
Cognee

RAG Frameworks· cognee.ai

Open source

Open-source AI memory and knowledge graph engine for persistent agent context.

22,861
Open source
Unstructured logo
Unstructured

RAG Frameworks· unstructured.io

Freemium

Document processing and ingestion platform for turning PDFs, HTML, Office files, and enterprise content into clean data for RAG pipelines.

15,048
Open source
txtai logo
txtai

RAG Frameworks· neuml.github.io

Open source

All-in-one framework for semantic search, embeddings, LLM orchestration, and language-model workflows.

12,697
Open source
CocoIndex logo
CocoIndex

RAG Frameworks· cocoindex.io

Open source

Incremental indexing engine for long-horizon agents and continuously updated RAG dataflows.

10,608
Open source
LangChain4j logo
LangChain4j

RAG Frameworks· docs.langchain4j.dev

Open source

Java framework for integrating LLMs, RAG pipelines, tools, and agent workflows into JVM applications.

12,442
Open source
Instructor logo
Instructor

RAG Frameworks· python.useinstructor.com

Open source

Structured-output library that adds validation, retries, and typed extraction across LLM providers and multiple languages.

13,229
Open source
Unstract logo
Unstract

RAG Frameworks· unstract.com

Open source

Open-source LLM platform for extracting structured data from unstructured documents into APIs and ETL workflows.

6,692
Open source
AnySearch logo
AnySearch

RAG Frameworks· anysearch.com

Freemium

Real-time structured search API and agent skill for web, code, academic, and multimodal retrieval.

4,090
Open source
DataChain logo
DataChain

RAG Frameworks· datachain.ai

Open source

Versioned context layer for unstructured AI datasets across object storage, built for document and multimodal pipelines.

2,794
Open source
Morphik logo
Morphik

RAG Frameworks· morphik.ai

Freemium

AI-native multimodal document ingestion, retrieval, and search infrastructure for RAG applications.

3,623
Open source
Mirascope logo
Mirascope

RAG Frameworks· mirascope.com

Open source

Lightweight LLM development toolkit for prompt engineering, tool calling, evaluations, and provider-agnostic application code.

1,505
Open source
Paxm logo
Paxm

RAG Frameworks· github.com

Open source

Persistent provider-neutral memory for Codex, Claude Code, OpenCode, Pi, and MCP coding agents.

147
Open source
Tavily logo
Tavily

RAG Frameworks· tavily.com

Freemium

Search and extraction API for AI agents that need live web context, retrieval, and structured research inputs.

1,290
API available
deja logo
deja

RAG Frameworks· vshulcz.github.io

Open source

Local-first memory layer for coding agents that indexes existing session logs, redacts secrets, and exposes fast cross-harness recall through MCP.

224
Open source
pgContext logo
pgContext

RAG Frameworks· github.com

Open source

Apache-licensed AI search engine built directly into Postgres for semantic retrieval and agent context workflows.

129
Open source
Exa logo
Exa

RAG Frameworks· exa.ai

Freemium

AI-native web search, crawling, and research API with MCP support for retrieval and grounding in production agent workflows.

233
API available
NoteBrain CLI logo
NoteBrain CLI

RAG Frameworks· github.com

Open source

Local-first CLI that turns Obsidian vaults into an offline semantic-search and knowledge-graph backend for AI coding agents.

18
Open source
Biel.ai logo
Biel.ai

RAG Frameworks· biel.ai

Freemium

Hosted RAG layer and MCP server that gives IDEs and AI assistants source-cited access to indexed product documentation.

3
Open source
Cap'n Hook logo
Cap'n Hook

RAG Frameworks· github.com

Open source

Persistent, invalidation-aware memory for coding agents that recalls codebase discoveries and removes stale context when files change.

21
Open source
Scribe logo
Scribe

RAG Frameworks· getscribe.dev

Open source

Self-hosted CLI that compiles repositories, coding sessions, and URLs into portable Git-backed memory for agents.

27
Open source
Graphlit logo
Graphlit

RAG Frameworks· graphlit.com

Freemium

API-first RAG and knowledge-ingestion platform for connecting content sources, extracting entities, and building searchable AI memory.

8
API available
BaseThread logo
BaseThread

RAG Frameworks· basethread.ai

Freemium

Shared team context graph exposed over MCP so coding assistants can read decisions and write activity without repeated re-explanation.

API available
Kit for AI logo
Kit for AI

RAG Frameworks· kitforai.com

Freemium

Persistent memory, document conversion, retrieval, and structured extraction for AI agents through REST and MCP interfaces.

API available
Unabyss logo
Unabyss

RAG Frameworks· unabyss.com

Freemium

MCP-native context layer that continuously structures data from builder work tools and serves shared context to compatible AI agents.

API available