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An open-source AI tools directory with clear use cases, visible source freshness, and maintenance evidence for anyone deciding what to try.

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Rankings use public ecosystem signals. Treat them as a starting point, then confirm license, setup, safety, and fit with the upstream project.
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Open-source AI tools directory

Open Source AI Tools & Projects Directory

Discover 161 open source AI tools across 1 categories. Start with what each tool does, then use current activity, maintenance signals, and source freshness when you need a deeper comparison.

Project data last synced 5d ago.
Most adopted
All-time GitHub footprint
Trending
Fastest weekly growth
Healthiest
Strongest maintenance signals
Recently updated
Latest repository activity
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🤖 Agent
🧱 Framework (selected)
⚡ Inference
💬 Interface
☁️ Platform
🎨 Image
🎵 Audio
✓ Verified evidence

Showing 51-100 of 161 projects

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#ProjectCategoryStars▼Weekly▽TrendHealth▽LanguageUpdated▽
51
Opendataloader Pdf
PDF Parser for AI-ready data. Automate PDF accessibility. Open-source.
Basic listing
🧱 Framework27.7K+6.6KStrong81/100Java10d ago
52
Cs249r Book
Machine Learning Systems
Basic listing
🧱 Framework27.5K+3.4KStrong86/100Python13d ago
53
Modular
The Modular Platform (includes MAX & Mojo)
Basic listing
🧱 Framework26.6K+489Strong81/100Mojo10d ago
54
Deep Learning For Image Processing
deep learning for image processing including classification and object-detection etc.
Basic listing
🧱 Framework26.3K+97Watch49/100Python7mo ago
55
Pumpkin Book
南瓜书:《机器学习》(西瓜书)公式详解
Basic listing
🧱 Framework26.0K+151Watch55/100-3mo ago
56
Kratos
Your ultimate Go microservices framework for the cloud-native era.
Basic listing
🧱 Framework25.8K+134Healthy67/100Go1mo ago
57
Shap
A game theoretic approach to explain the output of any machine learning model.
Basic listing
🧱 Framework25.6K+226Healthy69/100Jupyter Notebook11d ago
58
Handson Ml
⛔️ DEPRECATED – See https://github.com/ageron/handson-ml3 or handson-mlp instead.
Basic listing
🧱 Framework25.6K-22Caution39/100Jupyter Notebook2mo ago
59
Vit Pytorch
Implementation of Vision Transformer, a simple way to achieve SOTA in vision classification with only a single transformer encoder, in Pytorch
Basic listing
🧱 Framework25.4K+267Healthy62/100Python1mo ago
60
Wavefunctioncollapse
Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics
Basic listing
🧱 Framework25.2K+177Watch42/100C#4mo ago
61
Haystack
Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.
Basic listing
🧱 Framework25.2K+73Healthy74/100MDX2mo ago
62
Toon
🎒 Token-Oriented Object Notation (TOON) – Compact, human-readable, schema-aware JSON for LLM prompts. Spec, benchmarks, TypeScript SDK.
Basic listing
🧱 Framework25.0K+746Healthy76/100TypeScript10d ago
63
Vercel AI SDK
The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents
Basic listing
🧱 Framework24.2K+126Strong81/100TypeScript2mo ago
64
Paddle
PArallel Distributed Deep LEarning: Machine Learning Framework from Industrial Practice (『飞桨』核心框架,深度学习&机器学习高性能单机、分布式训练和跨平台部署)
Basic listing
🧱 Framework24.0K+140Healthy79/100C++10d ago
65
Pytorch Geometric
Graph Neural Network Library for PyTorch
Basic listing
🧱 Framework23.9K+163Healthy68/100Python10d ago
66
Ncnn
ncnn is a high-performance neural network inference framework optimized for the mobile platform
Basic listing
🧱 Framework23.6K+352Healthy75/100C++10d ago
67
Deepface
A Lightweight Face Recognition and Facial Attribute Analysis (Age, Gender, Emotion and Race) Library for Python
Basic listing
🧱 Framework23.1K+429Healthy68/100Python1mo ago
68
Learnopencv
Learn OpenCV : C++ and Python Examples
Basic listing
🧱 Framework23.0K+125Watch57/100Jupyter Notebook10d ago
69
CVPR2026 Papers With Code
CVPR 2026 论文和开源项目合集
Basic listing
🧱 Framework22.8K+231Watch45/100-4mo ago
70
RAG Anything
"RAG-Anything: All-in-One RAG Framework"
Basic listing
🧱 Framework22.4K+2.4KHealthy66/100Python12d ago
71
Recommenders
Best Practices on Recommendation Systems
Basic listing
🧱 Framework21.8K+164Healthy63/100Python11d ago
72
Hivisionidphotos
⚡️HivisionIDPhotos: a lightweight and efficient AI ID photos tools. 一个轻量级的AI证件照制作算法。
Basic listing
🧱 Framework21.3K+205Watch56/100Python29d ago
73
Rasa
💬 Open source machine learning framework to automate text- and voice-based conversations: NLU, dialogue management, connect to Slack, Facebook, and more - Create chatbots and voice assistants
Basic listing
🧱 Framework21.3K+101Healthy61/100Python8d ago
74
Onnxruntime
ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator
Basic listing
🧱 Framework21.2K+723Strong88/100C++5d ago
75
Onnx
Open standard for machine learning interoperability
Basic listing
🧱 Framework21.2K+387Strong84/100Python10d ago
76
Adk Python
An open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.
Basic listing
🧱 Framework20.9K+1.3KStrong96/100Python5d ago
77
Cua
Scale computer-use 2.0 with open-source drivers, cross-OS fleets, and benchmarks for training, evaluation, and data generation.
Basic listing
🧱 Framework20.7K+4.7KStrong92/100HTML5d ago
78
Video2x
A machine learning-based video super resolution and frame interpolation framework. Est. Hack the Valley II, 2018.
Basic listing
🧱 Framework20.6K+794Healthy60/100C++4mo ago
79
Gun
An open source cybersecurity protocol for syncing decentralized graph data.
Basic listing
🧱 Framework19.1K+41Watch40/100JavaScript5mo ago
80
Nndl
邱锡鹏《神经网络与深度学习》(蒲公英书)理论书 v2 与通识版
Basic listing
🧱 Framework19.0K+8Watch40/100-2mo ago
81
Awesome Nlp
:book: A curated list of resources dedicated to Natural Language Processing (NLP)
Basic listing
🧱 Framework18.9K+344Watch53/100-20d ago
82
Pytorch Deep Learning
Materials for the Learn PyTorch for Deep Learning: Zero to Mastery course.
Basic listing
🧱 Framework18.5K+697Watch58/100Jupyter Notebook5mo ago
83
Nuclear
Streaming music player that finds free music for you
Basic listing
🧱 Framework18.1K+530Healthy63/100TypeScript5d ago
84
ML NLP
此项目是机器学习(Machine Learning)、深度学习(Deep Learning)、NLP面试中常考到的知识点和代码实现,也是作为一个算法工程师必会的理论基础知识。
Basic listing
🧱 Framework17.8K+115Caution37/100Jupyter Notebook6mo ago
85
Magika
Fast and accurate AI powered file content types detection
Basic listing
🧱 Framework17.8K0Watch49/100Python1mo ago
86
Transformers.js
State-of-the-art Machine Learning for the web. Run 🤗 Transformers directly in your browser, with no need for a server!
Basic listing
🧱 Framework16.2K+230Watch54/100JavaScript8d ago
87
Context Mode
Context window optimization for AI coding agents. Sandboxes tool output, 98% reduction. 15 platforms
Basic listing
🧱 Framework14.4K0Healthy70/100TypeScript2mo ago
88
Electerm
📻Terminal/ssh/sftp/ftp/telnet/serialport/RDP/VNC/Spice client(linux, mac, win)
Basic listing
🧱 Framework14.1K0Healthy64/100JavaScript2mo ago
89
Openmetadata
OpenMetadata is a unified metadata platform for data discovery, data observability, and data governance powered by a central metadata repository, in-depth column level lineage, and seamless team collaboration.
Basic listing
🧱 Framework13.9K0Healthy70/100TypeScript2mo ago
90
Xiaohongshu Mcp
MCP for xiaohongshu.com
Basic listing
🧱 Framework13.5K0Healthy61/100Go3mo ago
91
Skill Seekers
Convert documentation websites, GitHub repositories, and PDFs into Claude AI skills with automatic conflict detection
Basic listing
🧱 Framework13.4K0Healthy65/100Python3mo ago
92
Paddlenlp
Easy-to-use and powerful LLM and SLM library with awesome model zoo.
Basic listing
🧱 Framework13.0K0Watch42/100Python2mo ago
93
Codexbar
Show usage stats for OpenAI Codex and Claude Code, without having to login.
Basic listing
🧱 Framework12.0K0Healthy67/100Swift2mo ago
94
Awesome Nano Banana Pro Prompts
🍌 World's largest Nano Banana Pro prompt library — 10,000+ curated prompts with preview images, 16 languages. Google Gemini AI image generation. Free & open source.
Basic listing
🧱 Framework11.9K0Watch58/100TypeScript2mo ago
95
Transformers Tutorials
This repository contains demos I made with the Transformers library by HuggingFace.
Basic listing
🧱 Framework11.6K0Caution34/100Jupyter Notebook3mo ago
96
Removewindowsai
Force Remove Copilot, Recall and More in Windows 11
Basic listing
🧱 Framework11.6K0Caution33/100PowerShell2mo ago
97
Segmentation Models.pytorch
Semantic segmentation models with 500+ pretrained convolutional and transformer-based backbones.
Basic listing
🧱 Framework11.5K0Watch51/100Python2mo ago
98
Tokenizers
💥 Fast State-of-the-Art Tokenizers optimized for Research and Production
Basic listing
🧱 Framework10.7K0Watch55/100Rust2mo ago
99
Chandra
OCR model that handles complex tables, forms, handwriting with full layout.
Basic listing
🧱 Framework10.5K0Caution29/100Python3mo ago
100
Mcp
Open source MCP Servers for AWS
Basic listing
🧱 Framework9.0K0Healthy69/100Python2mo ago
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How to use the ranking

Turn a leaderboard into an adoption shortlist

1. Match the use case

Start with category and search filters. An agent framework, inference runtime, interface, and image model solve different problems even when all are called “AI tools.”

2. Check present-tense health

Use weekly growth, last update, commit frequency, and health score to distinguish active projects from repositories living on historical popularity.

3. Validate in your environment

Open the detail page, inspect the upstream repository and license, then run a small proof of concept. Rankings narrow the field; they do not replace technical due diligence.

Quick answers

Open source AI project rankings

What makes an open source AI project worth adopting?+

Start with the use case, then look beyond stars. Recent activity, releases, issue handling, contributor depth, documentation, license, and setup fit all matter. This directory exposes those signals so you can create a shortlist before trying a tool.

Is the most-starred AI project always the best choice?+

No. Stars show awareness and broad adoption, but they do not guarantee active maintenance or suitability for your use case. Use the Trending, Healthiest, and Recently Updated views alongside the all-time ranking.

How should I compare two AI projects?+

Compare maturity, current momentum, maintenance health, language, license, deployment model, integrations, and operating cost. Project detail pages also link to side-by-side comparison pages when a relevant peer is available.

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