Free Tools & Datasets for Python Data Engineering

Powerful Python library for data manipulation and analysis, offering DataFrame structures for efficient data cleaning, transformation, and analysis. Often used in the transform phase of ETL processes.

Python package specifically designed for ETL tasks, offering tools for data extraction, transformation, and loading. Suitable for simpler, script-based ETL processes.

Python API for Apache Spark, enabling scalable and efficient data processing. Particularly useful for ETL processes involving large datasets that need parallel processing across a cluster.

Python library that facilitates the loading phase in ETL processes. Designed to simplify loading data into various data stores or processing systems.

Open-source transformation tool enabling data analysts and engineers to transform, test, and document data in the warehouse. Focuses on the transform part of ETL with SQL templating and Python scripting.

Lightweight Extract-Transform-Load (ETL) framework for Python 3.6+. Allows writing ETL scripts in pure Python, particularly suited for simple and straightforward ETL tasks.

Modern data pipeline tool focused on automating data preparation and feature engineering for machine learning. Streamlines the data transformation process in ETL workflows.

Platform to programmatically author, schedule, and monitor workflows. Allows for complex pipeline construction and efficient task management with robust dependency handling.

Developed by Spotify, Luigi helps build complex pipelines of batch jobs, handling dependency resolution, workflow management, and task visualization.

Easy-to-use, powerful, and reliable system to process and distribute data, offering a web-based user interface for data flow management.

Workflow management system designed for modern infrastructure, with a focus on simplicity, ease of use, and flexibility in defining and executing workflows.

Open-source data orchestrator for machine learning, analytics, and ETL. Focuses on development, production, and observation of data assets with integrated pipeline views.

Open-source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Designed for large-scale computational tasks with powerful workflow features.

Parallel computing library that scales Pandas workflows to larger-than-memory datasets. Enables parallel processing while maintaining a familiar Pandas-like interface for big data.

Fundamental library for numerical computing in Python. Supports large multi-dimensional arrays and matrices with a vast collection of mathematical functions for array operations.

Library for web scraping and parsing HTML/XML documents. Extensively used in data wrangling to clean, parse, and extract data from web sources.

Powerful web crawling and scraping framework for extracting, cleaning, and processing large volumes of web data. Essential for data wrangling from web sources.

Simple library for processing textual data with APIs for common NLP tasks. Essential for data wrangling when dealing with text data and natural language processing.

Data validation and settings management library using Python type annotations. Ensures data conforms to defined schemas with Python's typing module, perfect for FastAPI and modern Python apps.

ORM/ODM/framework-agnostic library for object serialization and deserialization. Converts complex data types to and from native Python datatypes with robust validation.

Lightweight and extensible data validation library supporting complex data structures with customizable validation rules. Highly flexible for various validation needs.

Validates Python data structures with straightforward syntax and clear error messages. Ensures structure and content adhere to specified schemas.

Library for validating JSON data against JSON Schema standards. Essential when working with JSON data formats to ensure schema compliance.

Flexible API for data validation on dataframe structures. Validates dataframes in real-time, integrates with pydantic and fastapi. Essential for production data pipelines.

Fast, simple, and powerful validation library with declarative validation rules. Optimized for performance when validating data from various sources.

Widely used ORM library providing a full suite of enterprise-level persistence patterns. Designed for efficient, high-performing database access with flexible SQL abstraction.

Part of Django web framework, allows defining data models entirely in Python. Provides powerful abstraction layer to translate Python code to SQL seamlessly.

Small, expressive ORM with simple and intuitive interface. Lightweight and easy to use, perfect for small to medium-sized applications prioritizing simplicity.

Unique ORM using generator expressions for queries. Intuitive and user-friendly, allowing complex queries in pure Python that mirror human language.

Popular ORM providing object-oriented interface with tables as classes and rows as instances. Supports variety of database backends with simplicity focus.

Easy-to-use asyncio ORM inspired by Django. Designed for async/await syntax, making it perfect for asynchronous applications and modern Python development.

Async ORM built on SQLAlchemy core for asyncio programming. Provides simple and intuitive API for asynchronous database interactions with high performance.

Lightweight database migration tool for use with SQLAlchemy. Alembic allows you to create, manage, and invoke change management scripts for your database, facilitating schema migrations as your application evolves.

Robust version control tool for databases with support for SQL-based migrations. While not Python-specific, widely used in the community and easily integrated into Python projects for database schema management.

Django's powerful built-in migration framework that comes bundled with Django. Allows you to change your database schema without losing data using a simple and intuitive API.

Extension that handles SQLAlchemy database migrations for Flask applications using Alembic. Provides command-line tools to manage and automate database migrations in Flask projects.

Database schema migration tool that lets you manage your database schema by applying and rolling back migration scripts written in pure SQL or Python. Simple and flexible approach to database migrations.

Provides a way to deal with database schema changes in SQLAlchemy projects. Extends SQLAlchemy to have database schema versioning and migration capabilities for managing database evolution.

The original migration tool for Django before built-in migrations were added in Django 1.7. Still relevant for maintaining or upgrading legacy Django applications running older versions.

Distributed event streaming platform capable of handling trillions of events a day. Used for building real-time streaming data pipelines and applications with high-throughput, fault-tolerance, and scalability.

Framework and distributed processing engine for stateful computations over unbounded and bounded data streams. Known for high performance in streaming data processing with exactly-once semantics.

Real-time computation system making it easy to process unbounded streams of data reliably. Fast and scalable distributed real-time computation framework for stream processing.

Stream processing library porting ideas from Kafka Streams to Python. Used for building high-performance and reliable real-time stream processing applications with Pythonic API.

Extension of Apache Spark API enabling scalable, high-throughput, fault-tolerant processing of live data streams. Integrated within Spark ecosystem for complex real-time data processing tasks.

Streaming data platform API-compatible with Apache Kafka but designed for better performance and easier operational management. Modern streaming platform for mission-critical workloads.

Lightweight WSGI web application framework easy to get started with and versatile for complex applications. Popular for building web APIs thanks to simplicity and extensibility.

Powerful and flexible toolkit for building Web APIs in Django. Highly recommended for adding API capabilities to Django applications with comprehensive features and excellent documentation.

Modern, fast (high-performance) web framework for building APIs with Python 3.7+ based on standard type hints. Features automatic API documentation, easy to use, and blazing fast execution.

Python web framework and asynchronous networking library. Particularly useful for long-polling, WebSockets, and applications requiring long-lived connections to each user.

Reliable, high-performance Python framework for building large-scale app backends and microservices. Encourages REST architectural style while remaining highly effective and minimalist.

Comprehensive tool helping data teams validate, document, and profile their data. Define expectations for your data ensuring it meets quality standards before processing.

Generates profile reports from pandas DataFrames. Excellent tool for quickly understanding data with interactive HTML reports including statistics, distributions, and correlations.

Python API for Deequ, AWS library built on Apache Spark for defining and verifying data quality constraints. Useful for large-scale data processing and quality verification.

Python library using machine learning to perform deduplication and entity resolution on structured data. Particularly useful for identifying and merging duplicate records.

Open-source data quality tool with CLI for defining, running, and monitoring data quality checks. Write tests to verify data meets conditions like missing values, ranges, or uniqueness.

Automatic tool for cleaning and preprocessing data. Handles missing values, encodes categorical data, and scales features making data preparation efficient.

Python package for automated data validation within Data Engineering pipelines. Engineered to ingest and validate tabular data against predefined schemas.

Comprehensive library for creating static, animated, and interactive visualizations in Python. Matplotlib is versatile and widely used for plotting graphs and charts with extensive customization options.

Built on top of Matplotlib, Seaborn provides a high-level interface for drawing attractive and informative statistical graphics, simplifying the creation of complex visualizations with beautiful default themes.

Plotly offers a range of interactive plotting options and is known for its advanced graphics and interactivity, supporting complex visualizations with ease. Perfect for creating web-based dashboards.

Bokeh focuses on building interactive, web-ready plots, which can be a powerful tool for creating dynamic visualizations that can easily be embedded in web applications.

Altair is a declarative statistical visualization library for Python, offering a simple and concise way to create a wide range of statistical plots based on a logical data mapping.

Versatile library providing a range of supervised and unsupervised learning algorithms. Known for its ease of use and efficiency for data mining and data analysis with classical ML algorithms.

End-to-end open-source platform for machine learning enabling complex computations with data flow graphs. Widely used for deep learning applications with robust production support.

Open-source machine learning library known for its flexibility, ease of use, and as a preferred tool for research in deep learning and artificial intelligence. Dynamic computation graphs.

High-level neural networks API designed for fast experimentation with deep neural networks. Runs on top of TensorFlow offering a user-friendly interface for building models.

Highly efficient implementation of gradient boosting frameworks designed for speed and performance. Widely used in machine learning competitions and practical applications for structured data.

Gradient boosting framework using tree-based learning algorithms. Designed for speed and efficiency, supporting large datasets and distributed computing for various ML tasks.

Algorithm for gradient boosting on decision trees developed by Yandex. Particularly effective for datasets with categorical features, known for robustness and handling overfitting well.

Framework that allows for distributed processing of large datasets across clusters of computers using simple programming models. Designed to scale from single servers to thousands of machines, each offering local computation and storage. Uses HDFS for distributed storage and MapReduce for processing.

Advanced unified programming model for defining and executing data processing workflows that can run on any execution engine. Provides portability across multiple execution environments including Apache Flink, Apache Spark, and Google Cloud Dataflow. Ideal for building flexible, scalable data pipelines.

The official Amazon Web Services (AWS) SDK for Python. Enables Python developers to write software that makes use of services like Amazon S3, EC2, Lambda, and more. Provides easy-to-use, object-oriented API as well as low-level access to AWS services, making it simple to integrate Python applications with AWS infrastructure.

Google Cloud Platform's official client library for Python, enabling seamless integration with GCP services like Compute Engine, Cloud Storage, BigQuery, and Pub/Sub. Designed for a Pythonic, intuitive experience when interacting with Google Cloud services, with idiomatic code patterns and comprehensive documentation.

Microsoft's comprehensive Azure SDK for Python offering a complete set of packages to interact with Azure resources and services. Supports wide range of Azure services including Virtual Machines, Storage, Databases, AI services, and more. Provides tools for effective resource management and service interaction within Azure ecosystem.

Official SDK for interacting with various IBM Cloud services programmatically. Provides comprehensive support for IBM Cloud services including CIS, DNS, IAM, VPC, Watson AI, and more. Enables management and automation of IBM Cloud resources with Python, compatible with Python 3.6 and above.

Official SDK for writing code to manage Oracle Cloud Infrastructure resources. Supports wide range of Oracle Cloud services with functionalities for compute, storage, networking, databases, and more. Available across multiple operating systems and Python versions, providing robust interface for OCI resource management.

Free, simple tool to draw Entity-Relationship diagrams by just writing code. Designed to help developers design and visualize database structures in a straightforward and intuitive way. Perfect for quickly sketching database schemas and sharing them with your team through simple DSL syntax.

Integrated tool provided by MySQL for database design, modeling, administration, and maintenance. Provides visual interface for creating, managing, and analyzing MySQL databases. Includes data modeling, SQL development, and comprehensive administration tools for MySQL database systems.

Python library designed to create Entity Relationship diagrams by extracting data from databases or SQLAlchemy models. Particularly useful for database designers and developers who need to visualize and interpret complex relationships within database systems. Generates diagrams automatically from your Python code.

Free and open-source diagramming tool that can be used to create Entity-Relationship diagrams. Versatile application suitable for simple modeling tasks, flowcharts, network diagrams, and database schemas. Lightweight alternative for developers who need basic ER diagram functionality.

Powerful, open-source object-relational database system known for reliability, feature robustness, and performance. Widely used in Python community with excellent support for advanced data types, JSON, full-text search, and performance optimization. ACID-compliant with strong community and enterprise adoption.

Open-source, in-memory data structure store used as database, cache, and message broker. Supports various data structures including strings, hashes, lists, sets, sorted sets, and streams. Provides high performance, sub-millisecond latency, and is widely used for caching, session management, and real-time analytics.

Highly scalable, distributed NoSQL database designed to handle large amounts of data across many commodity servers with no single point of failure. Provides high availability and linear scalability. Ideal for applications requiring continuous availability and massive write throughput.

Scalable and extensible set of core foundational governance services for Hadoop ecosystem and enterprise data. Enables organizations to effectively meet compliance requirements with metadata management, data classification, and lineage tracking. Integrates with Python through REST APIs for governance automation.

Data discovery and metadata engine for improving productivity of data analysts, scientists, and engineers when interacting with data. Provides powerful search, data previews, and column-level lineage. Integrates seamlessly with Python environments and modern data stacks for comprehensive metadata management.

Powerful data management system that makes data accessible by providing tools to streamline publishing, sharing, finding, and using data. Aimed at data publishers wanting to make their data open and available. Features data cataloging, API generation, and visualization capabilities.

Open-source metadata service for collection, aggregation, and visualization of data ecosystem metadata. Provides common interface to track data lineage across your entire data platform. Offers Python client for integration and supports OpenLineage standard for lineage collection.

Open-source metadata platform for the modern data stack. Provides powerful and flexible metadata search, discovery, and lineage capabilities. Features real-time metadata updates, data quality monitoring, and governance workflows. Extensive Python SDK for automation and integration.

Vast community of developers and IT professionals with extensive data engineering questions and answers. Rich resource for troubleshooting, learning from real-world problems, and discovering solutions. Active community providing quick responses to technical challenges in Python data engineering.

Dedicated subreddit for data engineering professionals and enthusiasts. Active discussions on trends, articles, questions, and insights related to data engineering including Python-specific topics. Great for staying updated with industry news and community wisdom.

Vibrant Slack community focused on dbt and modern data practices. Fantastic place for data engineers to discuss analytics engineering, share experiences, and find support on various data topics including Python integrations. Active community with thousands of members.

World's largest data science community featuring competitions, datasets, and collaborative notebooks. Members share code, discuss methodologies, and collaborate on projects. Excellent for finding practical Python examples, innovative solutions, and learning from top data scientists.

LinkedIn group where data engineering professionals share articles, discuss industry trends, and network. Members engage in discussions, share insights, and connect for career opportunities. Great for professional networking and staying informed about industry developments.

Community dedicated to operational analytics, offering resources and discussions to help professionals leverage data for operational decision-making. Focuses on practical applications of analytics in business operations and real-time data systems.

Community focusing on data-centric aspects of AI development. Provides resources and discussions on improving data quality and processes in AI projects. Emphasizes the importance of high-quality data over just algorithms in machine learning success.

Active Discord community focused on Machine Learning Operations (MLOps). Members discuss best practices, tools, and strategies for deploying and maintaining ML systems. Great for real-time discussions on ML engineering, monitoring, and production systems.

Community of data enthusiasts sharing knowledge through talks, discussions, and events. Offers free courses, weekly events, and active Slack community. Covers data engineering, machine learning, and analytics with hands-on learning opportunities.

Open and inclusive community for individuals interested in Machine Learning Operations. Provides resources, discussions, podcasts, and events for implementing MLOps practices. Focuses on bridging gap between ML development and production deployment.

Community for data professionals offering insightful content, discussions, and resources. Focuses on data analytics leadership, career growth, and collaboration. Features newsletter, Slack community, and blog posts from experienced data leaders.

Discord server dedicated to data engineering with active discussions on data infrastructure, architectures, pipelines, and best practices. Real-time community support for troubleshooting, career advice, and learning. Great for connecting with other data engineers globally.

Foundational library for data manipulation and analysis in Python. Provides fast, flexible, and expressive data structures (DataFrames) designed for working with structured, tabular, and time series data. Essential tool for data wrangling with comprehensive features for indexing, grouping, merging, and filtering.

Powerful tool for working with messy data, cleaning it, transforming from one format to another, and extending it with web services or external data. Although not a Python library, it's valuable for advanced data wrangling alongside Python tools.

Lightweight and async-ready ORM designed to work with FastAPI and Starlette. Particularly suited for applications requiring asynchronous database operations with minimal overhead and modern Python async/await patterns.

Python is a high-level, interpreted programming language that has become the dominant language for data engineering. Known for its clear syntax, extensive standard library, and rich ecosystem of data-focused packages. Essential foundation for all Python data engineering work.

Powerful, free code editor with excellent Python support through extensions. Features IntelliSense, debugging, Git integration, and a vast marketplace of extensions. The most popular IDE for Python data engineering with powerful features for managing virtual environments and running code.

The standard package installer for Python. Used to install and manage Python packages from the Python Package Index (PyPI) and other repositories. Essential tool for managing dependencies in any Python project, comes bundled with Python installations.

Tools for creating isolated Python environments, allowing you to manage project-specific dependencies without conflicts. venv comes built into Python 3, while virtualenv offers additional features. Critical for professional Python development and maintaining clean, reproducible environments.

Industry-standard platform for developing, shipping, and running applications in containers. Essential for data engineering to run databases, Kafka, and other services in isolated, reproducible environments. Docker Desktop provides an easy-to-use interface for managing containers across all operating systems.

Tool for defining and running multi-container Docker applications using YAML configuration files. Perfect for data engineering workflows that require multiple services like databases, message queues, and processing engines running together. Simplifies complex container setups into simple, version-controlled configurations.