Open-source data-science software

1503 open-source libraries, tools and applications tagged data-science, ranked by how closely data-science is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.

1503 products, primary matches first, then adoption-weighted; health v2 shown.

Product	Health v2	Stars	Maturity
TheAlgorithms/Python TheAlgorithms/Python is a comprehensive collection of algorithm implementations written in Python. It serves as an educational resource for…	76	225124	active
microsoft/markitdown MarkItDown is a lightweight Python utility that converts a wide range of file types—including PDFs, Office documents, images, audio, and ar…	84	188214	active
FastAPI FastAPI is a modern, high‑performance Python web framework for building APIs with standard type hints. It provides automatic OpenAPI docume…	94	103093	active
unclecode/crawl4ai Crawl4AI is an open‑source Python library that provides an asynchronous, headless‑browser crawler and scraper optimized for LLM‑ready markd…	89	84624	active
apache/superset Apache Superset is an open-source, enterprise‑ready business intelligence web application. It provides a no‑code chart builder, a powerful …	98	75196	active
OpenBB OpenBB is an open-source Python library that provides a unified data integration layer for financial, economic, and crypto data. It powers …	85	73550	active
OpenBB OpenBB's Open Data Platform (ODP) is an open-source Python toolset that integrates proprietary, licensed, and public financial data sources…	85	73550	active
Docling Docling is a Python SDK and CLI that parses a wide range of document formats into a unified representation. It also provides a service mode…	87	68703	active
scikit-learn/scikit-learn scikit-learn is a Python module for machine learning built on top of SciPy, providing classification, regression, clustering, and model eva…	88	67403	stable
ZhuLinsen/daily_stock_analysis Daily Stock Analysis (DSA) is an LLM‑powered system that aggregates market data, news, and fundamentals across multiple stock exchanges and…	81	65897	active
scrapy/scrapy Scrapy is a fast, high-level web crawling and scraping framework for Python. It provides tools for defining spiders, extracting data, and e…	97	64503	active
Freqtrade Freqtrade is a free, open‑source cryptocurrency trading bot written in Python. It supports multiple exchanges, offers a Telegram and web UI…	98	55362	active
TanStack/query TanStack Query is a TypeScript/JavaScript library for asynchronous state management and server‑state utilities. It provides declarative API…	95	50412	active
pandas pandas is a Python library that provides fast, flexible, and expressive data structures for labeled data. It is widely used for data cleani…	94	49994	active
pandas pandas is a fast, flexible Python library providing labeled data structures like the DataFrame for practical, real-world data analysis and …	94	49994	stable
metabase/metabase Metabase is an open‑source business intelligence platform that lets users explore data, build visual dashboards and run queries without dee…	95	49624	active
Julia Julia is a high-level, high-performance dynamic programming language designed for technical and scientific computing. It combines the ease …	100	49218	active
Algorithm Visualizer Algorithm Visualizer is an interactive web application that animates algorithms directly from source code. It provides a visual learning en…	32	48883	active
Qlib Qlib is an AI‑oriented quantitative investment platform written in Python. It provides end‑to‑end tools for data preparation, model trainin…	66	48694	active
Qlib Qlib is an AI-oriented quantitative investment platform from Microsoft that supports the full quant research workflow, from data processing…	66	48694	active
Apache Airflow Apache Airflow is an open-source platform for programmatically authoring, scheduling, and monitoring workflows as directed acyclic graphs (…	98	47148	stable
Streamlit Streamlit is an open‑source Python framework that turns scripts into interactive web apps with minimal code. It provides a simple API for w…	99	45933	active
Streamlit Streamlit is an open-source Python framework that turns data scripts into interactive web apps in minutes, with widgets, charts, and datafr…	99	45933	stable
Yuan1z0825/nature-skills Nature Skills is a CLI-based skill library that provides reusable AI-powered workflows for academic writing and scientific figure generatio…	58	45766	active
VeighNa VeighNa (vn.py) is an open-source Python framework for developing quantitative trading systems, covering strategy development, backtesting,…	83	45695	stable
Apache Spark Apache Spark is a unified analytics engine for large-scale data processing that provides high‑level APIs in Scala, Java, Python, and R. It …	77	44159	active
Apache Spark Apache Spark is a unified analytics engine for large-scale data processing, providing high-level APIs in Scala, Java, Python, and R over an…	77	44159	stable
colinhacks/zod Zod is a TypeScript‑first schema validation library that provides runtime validation with static type inference. It lets you define schemas…	94	44076	active
Gradio Gradio is an open‑source Python library that lets you build interactive web interfaces for machine‑learning models, APIs, or any Python fun…	95	43762	active
Gradio Gradio is an open-source Python library for quickly building web-based demos and UIs for machine learning models, APIs, or arbitrary Python…	95	43762	stable
BettaFish BettaFish (微舆) is a from-scratch multi-agent public opinion analysis system in Python that monitors 30+ social media platforms, analyzes mi…	75	42341	active
DuckDB DuckDB is a high‑performance, in‑process analytical SQL database written in C++. It provides a rich SQL dialect, supports many file formats…	94	42114	active
datalab-to/marker Marker is an open‑source Python tool that converts PDFs and other document formats into markdown, JSON, HTML, and structured chunks. It sup…	89	40358	active
PostHog PostHog is an open‑source platform for product analytics, feature flags, session replay, error tracking and experimentation. It can be self…	96	40328	active
PhotoPrism PhotoPrism is an AI‑powered, privacy‑focused application for browsing, organizing and sharing photos and videos. It runs as a self‑hosted w…	94	40276	active
HKUDS/LightRAG LightRAG is a Python library that implements a simple and fast Retrieval-Augmented Generation framework using graph structures and vector e…	84	40153	active
Polars Polars is a high-performance DataFrame library written in Rust with bindings for Python, Node.js, R and more. It provides fast, lazy and ea…	92	39857	active
Polars Polars is an extremely fast analytical query engine for DataFrames written in Rust, with multi-threaded vectorized execution, lazy query op…	92	39857	stable
shiyu-coder/Kronos Kronos is an open‑source decoder‑only foundation model trained on financial candlestick (K‑line) data from dozens of global exchanges. It p…	50	39500	active
Project NOMAD Project NOMAD is a self‑contained offline‑first knowledge and education server that serves Wikipedia, books, maps and optional local AI thr…	85	39414	active
google/langextract LangExtract is a Python library that uses large language models to extract structured information from unstructured text. It provides preci…	85	38953	active
tesseract.js Tesseract.js is a pure JavaScript library that provides OCR capabilities for over 100 languages using WebAssembly. It can run in browsers a…	64	38729	active
soxoj/maigret Maigret is a Python‑based command‑line tool that gathers public information about a person using only a username. It checks thousands of we…	97	38084	active
PDFMathTranslate/PDFMathTranslate PDFMathTranslate is a Python‑based tool that translates scientific PDF documents into multiple languages while preserving the original layo…	70	37623	active
doocs/leetcode A comprehensive repository of LeetCode, Offer, and interview question solutions implemented in many programming languages. It serves as a r…	67	36676	active
SheetJS SheetJS Community Edition is an open‑source JavaScript library for reading, writing, and manipulating spreadsheet files in many formats. It…	32	36347	active
SheetJS SheetJS Community Edition is a JavaScript library that reads, writes, and converts spreadsheet files (XLSX, XLS, CSV, ODS, and more) with a…	32	36347	stable
CyberChef CyberChef is a web-based tool that lets users perform a wide range of data manipulation tasks such as encoding, encryption, compression, ha…	98	36120	active
CyberChef CyberChef is a browser-based web application for performing a wide range of 'cyber' operations such as encryption, encoding, compression, h…	98	36120	active
jq jq is a lightweight, portable command-line tool for processing JSON data. It lets you slice, filter, map, and transform JSON with concise, …	82	35854	active
OCRmyPDF OCRmyPDF is a command‑line utility that adds an OCR text layer to scanned PDF files, making them searchable and copy‑pasteable. It leverage…	97	34884	active
google-research/timesfm TimesFM is a pretrained decoder‑only foundation model for time‑series forecasting released by Google Research. It provides zero‑shot foreca…	84	34487	active
spaCy spaCy is an industrial-strength natural language processing library for Python and Cython, featuring pretrained pipelines for 70+ languages…	97	33952	stable
numpy/numpy NumPy is a fundamental Python library that provides powerful N-dimensional array objects and a suite of mathematical functions. It enables …	96	32812	active
Fincept-Corporation/FinceptTerminal Fincept Terminal is an open-source desktop finance application that provides advanced market analytics, investment research, and quantitati…	90	32460	active
ScrapeGraphAI ScrapeGraphAI is a Python library that leverages large language models to automate web scraping and data extraction. It provides a high‑lev…	87	31358	active
nautechsystems/nautilus_trader NautilusTrader is an open-source, Rust-native algorithmic trading engine with a deterministic, event‑driven core. It provides Python bindin…	96	30308	active
deepinsight/insightface InsightFace is an open-source Python library for state-of-the-art 2D and 3D face analysis, including detection, recognition, alignment, swa…	85	29939	active
OpenDataLoader PDF OpenDataLoader PDF is an open‑source PDF parsing library that converts PDFs into AI‑ready formats such as Markdown, JSON with bounding boxe…	83	29741	active
Pydantic Pydantic is a Python library that validates and parses data using type hints. It provides fast, extensible schema validation and JSON‑Schem…	99	28972	active
XGBoost XGBoost is an optimized, scalable gradient boosting library written in C++ with bindings for Python, R, Java, Scala and other languages. It…	94	28887	active
XGBoost XGBoost is an optimized, scalable gradient boosting library implementing parallel tree boosting (GBDT/GBM) with bindings for Python, R, Jav…	94	28887	stable
Redash Redash is an open‑source web application for querying databases, visualizing results, and building shareable dashboards. It supports over 3…	86	28832	active
ArchiveBox ArchiveBox is an open‑source, self‑hosted web‑archiving application that captures URLs, bookmarks, RSS feeds and more into durable formats …	99	28737	active
Label Studio Label Studio is an open‑source, web‑based data labeling and annotation platform that supports text, image, audio, video, and time‑series da…	95	28488	active
MLflow MLflow is an open source AI engineering platform for agents, LLMs, and traditional ML models, providing experiment tracking, model registry…	100	28441	stable
LeRobot LeRobot is a Python library that provides a unified interface for controlling real robots, recording datasets, and training/deploying polic…	90	28232	active
fastai fastai is a deep learning library built on PyTorch that offers high-level components for quickly achieving state-of-the-art results in visi…	92	28224	stable
gocolly/colly Colly is a Go library that provides a clean, fast API for building web scrapers and crawlers. It supports synchronous, asynchronous, and pa…	67	25552	active
TOON TOON (Token-Oriented Object Notation) is a compact, human‑readable serialization format for JSON data designed for LLM prompts. It provides…	78	25440	active
ranaroussi/yfinance yfinance is a Python library that fetches financial and market data from Yahoo! Finance's publicly available APIs, returning data as pandas…	95	25373	stable
plotly/dash Dash is an open‑source Python library for building reactive, data‑driven web applications without writing JavaScript. It combines Flask, Re…	94	24429	active
guillaumemeyer/watermarks-remover watermarks-remover is a Python‑based service and agent skill that strips AI provenance watermarks from text and a wide range of file format…	78	24211	active
PrefectHQ/prefect Prefect is an open‑source Python library for building, scheduling, and monitoring resilient data pipelines. It provides a simple, Pythonic …	92	23921	active
vanna-ai/vanna Vanna is an open-source Python framework for building user-aware AI agents that translate natural-language questions into SQL queries, char…	10	23812	active
sinaptik-ai/pandas-ai PandasAI is a Python library that lets users query data in SQL, CSV, or parquet format using natural language, powered by LLMs and RAG. It …	52	23808	active
Matplotlib Matplotlib is a comprehensive Python library for creating static, animated, and interactive visualizations. It supports a wide range of plo…	94	23375	stable
every-app/open-seo OpenSEO is an open‑source SEO platform that provides keyword research, rank tracking, backlink analysis, site audits and AI visibility tool…	82	23344	active
mementum/backtrader Backtrader is an open‑source Python library that provides a full‑featured backtesting and live‑trading engine. It lets you define reusable …	32	23292	active
marimo marimo is a reactive Python notebook that stores notebooks as pure .py files, enabling reproducible, git‑friendly workflows. It provides an…	90	22981	active
marimo marimo is a reactive Python notebook stored as pure Python files, where running a cell automatically re-runs dependent cells to keep code a…	90	22981	active
AKShare AKShare is a Python library that provides a simple, unified interface to fetch a wide range of financial data from many sources. It aims to…	93	22831	active
huggingface/datasets 🤗 Datasets is a Python library that provides one‑line loading of thousands of public datasets and powerful tools for preprocessing and stre…	99	22061	active
Matomo Matomo is an open-source web analytics platform that you install on your own server. It provides real‑time visitor tracking, dashboards, an…	98	21922	active
recommenders-team/recommenders A Python library and collection of Jupyter notebooks with best practices for building, evaluating, and operationalizing recommendation syst…	66	21919	active
QuantConnect LEAN LEAN is an open‑source, event‑driven algorithmic trading engine written in C# with Python support. It provides a modular framework for rese…	66	21779	active
Machine Learning for Trading Machine Learning for Trading is an open‑source Python ecosystem that provides end‑to‑end tools for quantitative finance, from market data a…	94	21452	active
qax-os/excelize Excelize is a pure Go library for reading and writing Microsoft Excel spreadsheet files (XLSX, XLSM, XLAM, etc.). It provides high‑performa…	86	20999	active
cube-js/cube Cube Core is an open‑source, headless semantic layer that exposes metrics, dimensions and access rules through SQL, REST and GraphQL APIs. …	95	20986	active
Fuse Fuse.js is a lightweight, zero‑dependency fuzzy‑search library written in TypeScript/JavaScript. It runs in browsers, Node.js, Deno and oth…	90	20506	active
Hummingbot Hummingbot is an open‑source Python framework for building and deploying automated crypto trading bots. It provides a CLI, API server, and …	94	20490	active
Bokeh Bokeh is a Python library for creating interactive visualizations that run in modern web browsers. It supports standalone HTML output as we…	77	20458	active
Bokeh Bokeh is a Python library for creating interactive data visualizations, plots, and dashboards that render in modern web browsers without wr…	77	20458	stable
quantopian/zipline Zipline is an open‑source Python library for event‑driven algorithmic trading and backtesting. It provides a framework to write, test, and …	23	20116	active
LLM Wiki LLM Wiki is a cross‑platform desktop application that automatically builds and maintains an interlinked knowledge base from your documents.…	76	20016	active
Jack-Cherish/python-spider A Python3 collection of web‑scraping scripts and tutorials covering sites like Taobao, JD, Bilibili, 12306, Douyin, and more. It provides r…	32	19805	active
firecrawl/pdf-inspector pdf-inspector is a high‑performance Rust library (with Node.js, Python, and WebAssembly bindings) that classifies PDFs and extracts their t…	82	19647	active
fengdu78/lihang-code A collection of Jupyter Notebook implementations of the algorithms described in Li Hang's "Statistical Learning Methods" textbook. The repo…	76	19606	active
Faker Faker is a Python library that generates realistic fake data such as names, addresses, and text. It is commonly used for populating databas…	95	19447	active
Faker Faker is a Python library that generates realistic fake data such as names, addresses, and text. It is commonly used to seed databases, cre…	95	19447	stable