Freemium Tools & Datasets for Python Data Engineering

Online diagram application that makes it easy to sketch and share professional flowcharts and database diagrams. Offers comprehensive support for database design and ER diagrams with collaborative environment for teams. Real-time collaboration, extensive template library, and integrations with popular tools.

Document database with scalability and flexibility, featuring querying and indexing capabilities. Stores data as JSON documents, making it ideal for rapid development and horizontal scaling. Supports aggregation pipelines, transactions, and has rich Python driver support with PyMongo.

Leading graph database management system designed to handle data relationships efficiently. Ideal for data models with highly interconnected entities. Perfect for social networks, recommendation engines, fraud detection, and knowledge graphs. Uses Cypher query language for intuitive graph queries.

Open-source time series database designed to handle high write and query loads for time-stamped data. Optimized for monitoring, IoT, analytics, and real-time applications. Features include retention policies, continuous queries, and InfluxQL for time-series specific operations.

Distributed, RESTful search and analytics engine capable of addressing growing use cases. Commonly used for log analytics, full-text search, security intelligence, business analytics, and operational intelligence. Built on Apache Lucene with powerful aggregations and near real-time search.

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