FreeAIRepo

The database of free AI tools on GitHub

23,066 open-source AI repos. Find a free alternative to any paid AI tool, or see what developers are talking about.

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47 repos · showing 1–30

infiniflow/ragflow

Builds context layers for LLMs using RAG and agent capabilities.

93kupdated today
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKGo
volcengine/OpenViking

Organizes AI agent knowledge as a virtual filesystem for easy navigation and management.

41kupdated 1d ago
RAG & search
Really freeCopyleft · AGPL-3.0CPU only OKPython
HKUDS/LightRAG

LightRAG is a fast retrieval-augmented generation tool for large language models.

40kupdated 3d ago
RAG & search
Really freeCommercial OK · MITCPU only OKPython
VectifyAI/PageIndex

Indexes and retrieves information from documents using LLM reasoning without vector databases.

40kupdated today
RAG & search
Commercial OK · MITNeeds paid APICPU only OKPython
chatchat-space/Langchain-Chatchat

构建基于本地知识库的问答应用,支持多种语言模型和检索方式。

39kupdated 11mo ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
microsoft/graphrag

Enhances LLMs with graph-based context for better reasoning.

36kupdated 5d ago
RAG & search
Really freeCommercial OK · MITCPU only OKPython
Tencent/WeKnora

Builds a knowledge base and reasoning agent from documents.

35kupdated 2d ago
RAG & search
No licenseCPU only OKGo
opendataloader-project/opendataloader-pdf

Extracts AI-ready data from PDFs for RAG and accessibility.

30kupdated 2d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKJava
Cinnamon/kotaemon

Build and use RAG-based document QA systems with a customizable UI.

26kupdated 3mo ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
PromtEngineer/localGPT

LocalGPT privately indexes and queries documents with AI.

22kupdated 2mo ago
RAG & search
Really freeCommercial OK · MITRuns on MacCPU only OKPython
memvid/memvid

Provides persistent, model-agnostic memory for AI agents.

17kupdated 3mo ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKRust
cactus-compute/needle

AI agent for mobile devices and microcontrollers, handling tool calls and structured extraction.

14kupdated 7d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
StarTrail-org/LEANN

Transform laptop into a powerful RAG system with 97% storage savings.

13kupdated 1d ago
RAG & search
Really freeCommercial OK · MITCPU only OKPython
neuml/txtai

txtai is an all-in-one AI framework for semantic search and LLM workflows.

13kupdated 3d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
StarTrail-org/PixelRAG

Search documents by visual content, not just text.

10kupdated 2d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
Future-House/paper-qa

Generate answers from scientific documents using RAG.

9.5kupdated today
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
deeplethe/utopia

Self-hosted knowledge management system for enterprise decision-making.

8.5kupdated 1d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKRust
zilliztech/deep-searcher

Search and reason on private data using LLMs and vector databases.

8.3kupdated 1mo ago
RAG & search
Commercial OK · Apache-2.0Needs paid APICPU only OKPython
clusterzx/paperless-ai

Automatically analyzes and tags documents using AI for semantic search.

6.0kupdated 10d ago
RAG & search
Really freeCommercial OK · MITCPU only OKJavaScript
Marker-Inc-Korea/AutoRAG

A personal librarian agent for organizing files and answering questions.

5.2kupdated 1d ago
RAG & search
Really freeCommercial OK · Apache-2.0Runs on MacCPU only OKTypeScript
VectifyAI/OpenKB

Converts documents into a structured wiki using LLMs for knowledge compilation.

4.8kupdated 3mo ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
feyninc/chonkie

Efficient text chunking for RAG pipelines.

4.8kupdated 3d ago
RAG & search
Really freeCommercial OK · MITCPU only OKPython
infiniflow/infinity

Hybrid search for dense, sparse, tensor, and full-text data for LLM applications.

4.7kupdated 9d ago
RAG & search
Really freeCommercial OK · Apache-2.0Runs on MacCPU only OKC++
ruvnet/RuVector

Provides local AI decision-making and persistent agent memory.

4.6kupdated today
RAG & search
Really freeCommercial OK · MITCPU only OKRust
CaviraOSS/LongMemory

Persistent memory store for AI agents and LLM applications.

4.5kupdated 7d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKTypeScript
CortexReach/memory-lancedb-pro

Enhances OpenClaw agents with long-term memory and context recall.

4.5kupdated 5d ago
RAG & search
No licenseCPU only OKJavaScript
zvec-ai/zvec-grep

Unified local-first search tool for humans and AI agents.

4.2kupdated 2d ago
RAG & search
Really freeCommercial OK · Apache-2.0Runs on MacCPU only OKRust
gusye1234/nano-graphrag

A simple, fast GraphRAG implementation for document search and retrieval.

4.0kupdated 9mo ago
RAG & search
Really freeCommercial OK · MITCPU only OKPython
Ontos-AI/knowhere

Parses and structures documents for AI agents and retrieval-augmented generation.

3.8kupdated 2d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython
superlinked/sie

Runs multiple AI models for various tasks in one cluster.

3.4kupdated 1d ago
RAG & search
Really freeCommercial OK · Apache-2.0CPU only OKPython