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AI and Agents 39 projectsBuild a typed agent in Pydantic AI. Long-running, stateful agents suit LangGraph. Apps tied to one model vendor can use that vendor's Python AI agent library. |
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| 1 | django-ai-plugins Agent Skills | Not on PyPI | 166 | Agent Skills AI and Agents AI & ML | ||
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Django backend agent skills for Django, DRF, Celery, and Django-specific code review.
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| 2 | scientific-agent-skills Agent Skills | Not on PyPI | 55,269 | Agent Skills AI and Agents AI & ML | ||
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Agent skills for scientific research and analysis with Python libraries like scikit-learn, polars, and biopython.
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| 3 | sentry-skills Agent Skills | Not on PyPI | 1,100 | Agent Skills AI and Agents AI & ML | ||
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Agent skills the Sentry team uses for code review, pull requests, and Django reviews.
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| 4 | trailofbits-skills Agent Skills | Not on PyPI | 7,878 | Agent Skills AI and Agents AI & ML | ||
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Security skills for vulnerability detection, auditing, and testing.
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| 5 | wshobson-agents Agent Skills | Not on PyPI | 41,988 | Agent Skills AI and Agents AI & ML | ||
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Plugins, agents, and skills for AI coding tools, including Python skills for testing, async, packaging, and uv.
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| 6 | langchain Orchestration | 155,891,577 | 148,676 | Orchestration AI and Agents AI & ML | ||
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A framework for building agents and LLM-powered applications.
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| 7 | langgraph Orchestration | 52,763,799 | 44,119 | Orchestration AI and Agents AI & ML | ||
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Low-level orchestration framework for building stateful, long-running LLM agents.
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| 8 | pydantic-ai Orchestration | 6,275,813 | 20,947 | Orchestration AI and Agents AI & ML | ||
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A Python agent framework for building generative AI applications with structured schemas.
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| 9 | crewai Orchestration | 2,694,202 | 60,264 | Orchestration AI and Agents AI & ML | ||
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A framework for orchestrating role-playing autonomous AI agents for collaborative task solving.
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| 10 | claude-agent-sdk Vendor Agent SDKs | 32,604,565 | 8,388 | Vendor Agent SDKs AI and Agents AI & ML | ||
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Anthropic's Python SDK for building AI agents on Claude Code's harness — custom tools, in-process MCP servers, hooks.
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| 11 | openai-agents Vendor Agent SDKs | 15,125,721 | 30,381 | Vendor Agent SDKs AI and Agents AI & ML | ||
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OpenAI's framework for building and managing AI agents.
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| 12 | google-adk Vendor Agent SDKs | 9,627,091 | 22,046 | Vendor Agent SDKs AI and Agents AI & ML | ||
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Google's code-first toolkit for building, evaluating, and deploying AI agents.
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| 13 | mcp Model Context Protocol | 272,584,217 | 24,708 | Model Context Protocol AI and Agents AI & ML | ||
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The official Python SDK for building Model Context Protocol servers and clients.
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| 14 | fastmcp Model Context Protocol | 57,813,961 | 28,238 | Model Context Protocol AI and Agents AI & ML | ||
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A high-level, Pythonic framework for building MCP servers and clients.
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| 15 | hermes-agent Personal Assistants | 358,011 | 258,506 | Personal Assistants AI and Agents AI & ML | ||
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An adaptive personal AI assistant that grows with you.
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| 16 | AstrBot Personal Assistants | 79,381 | 44,762 | Personal Assistants AI and Agents AI & ML | ||
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A multi-platform AI assistant that connects LLMs to chat apps like Telegram, Slack, and QQ, extensible with Python plugins.
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| 17 | dspy Prompt Optimization | 5,482,525 | 38,849 | Prompt Optimization AI and Agents AI & ML | ||
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A framework for programming, not prompting, language models.
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| 18 | instructor Data Layer | 8,953,251 | 14,077 | Data Layer AI and Agents AI & ML | ||
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A library for extracting structured data from LLMs, powered by Pydantic.
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| 19 | llama-index Data Layer | 2,469,228 | 52,735 | Data Layer AI and Agents AI & ML | ||
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A toolkit for building RAG pipelines and agents over your data.
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| 20 | mem0 Data Layer | 2,405,994 | 68,063 | Data Layer AI and Agents AI & ML | ||
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An intelligent memory layer for AI agents enabling personalized interactions.
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| 21 | openviking Data Layer | 443,745 | 41,150 | Data Layer AI and Agents AI & ML | ||
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A context database for AI agents that unifies memory, resources, and skills.
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| 22 | semantica Data Layer | 14,934 | 14,320 | Data Layer AI and Agents AI & ML | ||
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A graph-native context and knowledge layer for AI agents with reasoning, provenance, and governance.
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| 23 | transformers Pre-trained Models | 105,806,703 | 168,332 | Pre-trained Models AI and Agents AI & ML | ||
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The model-definition framework for pretrained models in text, computer vision, audio, video, and multimodal tasks, for inference and training.
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| 24 | sentence-transformers Pre-trained Models | 21,627,038 | 19,235 | Pre-trained Models AI and Agents AI & ML | ||
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Compute embeddings, run retrieval, and rerank results with pretrained and fine-tuned models.
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| 25 | ollama Local LLM Inference | 12,897,343 | 10,642 | Local LLM Inference AI and Agents AI & ML | ||
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Python client for Ollama, which downloads and runs open-weight LLMs locally.
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| 26 | llama-cpp-python Local LLM Inference | 601,891 | 10,667 | Local LLM Inference AI and Agents AI & ML | ||
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Python bindings for llama.cpp, for running GGUF models locally.
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| 27 | mlx-lm Local LLM Inference | 595,742 | 7,505 | Local LLM Inference AI and Agents AI & ML | ||
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Run and fine-tune large language models on Apple Silicon with MLX.
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| 28 | vllm LLM Serving | 2,259,741 | 95,866 | LLM Serving AI and Agents AI & ML | ||
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A high-throughput and memory-efficient inference and serving engine for LLMs.
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| 29 | sglang LLM Serving | 1,843,109 | 38,364 | LLM Serving AI and Agents AI & ML | ||
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A high-performance serving framework for large language models and multimodal models.
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| 30 | deepinfer LLM Serving | 417 | 24,242 | LLM Serving AI and Agents AI & ML | ||
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DeepSeek's production inference engine for DeepSeek models, with MoE expert parallelism.
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| 31 | diffusers Image and Video Generation | 5,733,566 | 34,833 | Image and Video Generation AI and Agents AI & ML | ||
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Pre-trained diffusion models for generating and editing images, audio, and video.
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| 32 | peft Fine-tuning | 8,780,426 | 21,859 | Fine-tuning AI and Agents AI & ML | ||
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A library for parameter-efficient fine-tuning of large pretrained models.
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| 33 | trl Fine-tuning | 2,274,375 | 19,630 | Fine-tuning AI and Agents AI & ML | ||
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A library for post-training transformer language models with SFT, DPO, GRPO, and other trainers.
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| 34 | unsloth Fine-tuning | 797,851 | 78,764 | Fine-tuning AI and Agents AI & ML | ||
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Faster, lower-memory LLM fine-tuning, as a Python library or a desktop app.
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| 35 | axolotl Fine-tuning | 9,782 | 12,648 | Fine-tuning AI and Agents AI & ML | ||
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A framework for fine-tuning and post-training large language models.
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| 36 | faster-whisper Speech | 15,002,747 | 26,303 | Speech AI and Agents AI & ML | ||
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A Whisper reimplementation on CTranslate2, up to 4 times faster than openai-whisper with less memory.
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| 37 | openai-whisper Speech | 6,127,145 | 111,545 | Speech AI and Agents AI & ML | ||
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A general-purpose automatic speech recognition model trained on 680k hours of multilingual and multitask supervised data.
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| 38 | gTTS Speech | 1,342,686 | 2,638 | Speech AI and Agents AI & ML | ||
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Python library and CLI tool for converting text to speech using Google Translate TTS.
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| 39 | funasr Speech | 356,526 | 20,874 | Speech AI and Agents AI & ML | ||
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Industrial-grade speech recognition toolkit with speaker diarization and emotion detection.
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Deep Learning 7 projectsPyTorch suits new models, since it debugs like plain Python. Gymnasium environments pass arrays to whichever Python deep learning framework trains your agent. |
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| 40 | pytorch Frameworks | 59,458,919 | 105,001 | Frameworks Deep Learning AI & ML | ||
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Tensors and dynamic neural networks in Python with strong GPU acceleration.
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| 41 | pytorch-lightning Frameworks | 9,855,178 | 31,433 | Frameworks Deep Learning AI & ML | ||
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Deep learning framework to train, deploy, and ship AI products Lightning fast.
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| 42 | jax Frameworks | 10,922,886 | 36,524 | Frameworks Deep Learning AI & ML | ||
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A library for high-performance numerical computing with autodiff and JIT compilation.
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| 43 | keras Frameworks | 11,882,341 | 64,397 | Frameworks Deep Learning AI & ML | ||
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A high-level deep learning library with support for JAX, TensorFlow, and PyTorch backends.
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| 44 | tensorflow Frameworks | 13,554,996 | 201,211 | Frameworks Deep Learning AI & ML | ||
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An end-to-end machine learning platform from Google.
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| 45 | gymnasium Reinforcement Learning | 4,576,367 | 12,756 | Reinforcement Learning Deep Learning AI & ML | ||
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A standard API for reinforcement learning environments with popular reference environments (gym successor).
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| 46 | stable-baselines3 Reinforcement Learning | 710,056 | 13,946 | Reinforcement Learning Deep Learning AI & ML | ||
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PyTorch implementations of Stable Baselines (deep) reinforcement learning algorithms.
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Machine Learning 13 projectsFit models with scikit-learn, which covers a Python machine learning library's basic tasks, boosted trees included. Deep learning takes a framework of its own. |
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| 47 | scikit-learn General | 197,311,302 | 67,913 | General Machine Learning AI & ML | ||
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The most popular Python library for machine learning with extensive documentation and community support.
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| 48 | imbalanced-learn General | 5,850,515 | 7,135 | General Machine Learning AI & ML | ||
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Resampling techniques for imbalanced datasets, compatible with scikit-learn.
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| 49 | pgmpy General | 338,939 | 3,364 | General Machine Learning AI & ML | ||
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A Python library for causal and probabilistic reasoning with graphical models.
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| 50 | feature-engine General | 183,512 | 2,293 | General Machine Learning AI & ML | ||
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sklearn-compatible API with the widest toolset for feature engineering and selection.
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| 51 | xgboost Gradient Boosting | 30,487,952 | 28,924 | Gradient Boosting Machine Learning AI & ML | ||
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A scalable, portable, and distributed gradient boosting library.
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| 52 | lightgbm Gradient Boosting | 20,567,130 | 18,939 | Gradient Boosting Machine Learning AI & ML | ||
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A fast, distributed, high-performance gradient boosting framework.
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| 53 | catboost Gradient Boosting | 6,552,385 | 9,182 | Gradient Boosting Machine Learning AI & ML | ||
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A fast, scalable, high-performance gradient boosting on decision trees library.
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| 54 | prophet Time Series Forecasting | 3,881,914 | 20,464 | Time Series Forecasting Machine Learning AI & ML | ||
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A tool for producing forecasts for time series with multiple seasonality and trend changes.
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| 55 | statsforecast Time Series Forecasting | 1,761,650 | 4,954 | Time Series Forecasting Machine Learning AI & ML | ||
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Fast statistical forecasting models such as ARIMA, ETS, and Theta, compiled with numba.
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| 56 | sktime Time Series Forecasting | 726,463 | 10,081 | Time Series Forecasting Machine Learning AI & ML | ||
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A unified scikit-learn-style framework for forecasting and other time-series learning tasks.
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| 57 | timesfm Time Series Forecasting | 332,478 | 34,826 | Time Series Forecasting Machine Learning AI & ML | ||
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A pretrained foundation model from Google Research for time-series forecasting, with non-commercial default weights.
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| 58 | optuna Hyperparameter Optimization | 13,584,389 | 14,988 | Hyperparameter Optimization Machine Learning AI & ML | ||
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A hyperparameter optimization framework with define-by-run search spaces and pruning of unpromising trials.
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| 59 | hyperopt Hyperparameter Optimization | 1,727,405 | 7,598 | Hyperparameter Optimization Machine Learning AI & ML | ||
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Distributed asynchronous hyperparameter optimization with Tree-structured Parzen Estimators.
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Natural Language Processing 8 projectsWhether you're building an app or learning the field, there's a Python NLP library for it: spaCy for apps, NLTK for learning. Stanza covers many languages. |
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| 60 | nltk General | 43,096,854 | 14,760 | General Natural Language Processing AI & ML | ||
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A leading platform for building Python programs to work with human language data.
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| 61 | spacy General | 21,793,782 | 34,003 | General Natural Language Processing AI & ML | ||
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A library for industrial-strength natural language processing in Python and Cython.
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| 62 | gensim General | 2,960,658 | 16,509 | General Natural Language Processing AI & ML | ||
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Topic Modeling for Humans.
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| 63 | stanza General | 933,703 | 7,904 | General Natural Language Processing AI & ML | ||
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The Stanford NLP Group's official Python library, supporting 60+ languages.
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| 64 | jieba Chinese | 5,585,455 | 35,221 | Chinese Natural Language Processing AI & ML | ||
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The most popular Chinese text segmentation library.
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| 65 | pypinyin Chinese | 2,259,799 | 5,388 | Chinese Natural Language Processing AI & ML | ||
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Convert Chinese hanzi (漢字) to pinyin (拼音).
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| 66 | OpenCC Chinese | 1,228,307 | 10,085 | Chinese Natural Language Processing AI & ML | ||
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Traditional/Simplified Chinese conversion with regional variants and phrase-level rules.
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| 67 | pangu.py Chinese | 9,362 | 281 | Chinese Natural Language Processing AI & ML | ||
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Paranoid text spacing.
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Computer Vision 7 projectsOpenCV processes images and video. Training your own detector needs more than a Python computer vision library scoped to inference, so reach for Ultralytics. |
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| 68 | opencv-python General | 32,948,753 | 5,438 | General Computer Vision AI & ML | ||
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Open Source Computer Vision Library.
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| 69 | ultralytics General | 4,636,391 | 62,974 | General Computer Vision AI & ML | ||
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Ultralytics YOLO for object detection, segmentation, pose estimation, classification, and tracking.
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| 70 | kornia General | 2,585,854 | 11,457 | General Computer Vision AI & ML | ||
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Open-source differentiable computer vision library for PyTorch.
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| 71 | fiftyone General | 155,126 | 11,250 | General Computer Vision AI & ML | ||
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The open-source tool for building high-quality datasets and computer vision models.
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| 72 | pytesseract OCR | 18,903,964 | 6,397 | OCR Computer Vision AI & ML | ||
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A wrapper for the Tesseract OCR engine.
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| 73 | easyocr OCR | 2,141,768 | 30,121 | OCR Computer Vision AI & ML | ||
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Ready-to-use OCR with 80+ languages supported.
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| 74 | paddleocr OCR | 1,222,724 | 91,955 | OCR Computer Vision AI & ML | ||
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Multilingual OCR and document parsing toolkit based on PaddlePaddle.
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Recommender Systems 3 projectsMatch the Python recommender system library to your data: Surprise if users rate items, implicit if they only buy or watch. Annoy finds similar items fast. |
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| 75 | annoy AI & ML | 980,827 | 14,323 | Recommender Systems AI & ML | ||
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Approximate Nearest Neighbors in C++/Python optimized for memory usage.
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| 76 | implicit AI & ML | 246,024 | 3,833 | Recommender Systems AI & ML | ||
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A fast Python implementation of collaborative filtering for implicit datasets.
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| 77 | scikit-surprise AI & ML | 63,185 | 6,823 | Recommender Systems AI & ML | ||
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A scikit for building and analyzing recommender systems.
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