Collecting, moving, storing, querying, visualising and validating data.
GE Great Expectations project (open-source stewardship by Fivetran) · Data quality & validation
Python data-quality framework that declares Expectations about datasets, validates them against pandas, Spark or SQL sources and produces Data Docs
Apache-2.0 Open source Free Local Self-hosted Nov 2, 2026M Matplotlib Development Team (NumFOCUS) · Data visualization
The foundational Python plotting library for static, publication-quality figures with full control over every element, exported to PDF, SVG, PNG and PGF
Open source Open source Free Local Nov 2, 2026O OpenSearch Software Foundation (Linux Foundation) · Vector databases
Apache-2.0 search and analytics suite forked from Elasticsearch and Kibana, governed by the OpenSearch Software Foundation
Apache-2.0 Open source Free Self-hosted BrokenP Pinecone Systems, Inc. · Vector databases
Fully managed, proprietary vector database service with serverless indexes, namespaces, metadata filtering and integrated embedding and reranking
Proprietary Freemium Usage-based Nov 2, 2026P Plotly Technologies Inc. · Data visualization
MIT-licensed interactive charting libraries for Python (plotly.py), JavaScript (plotly.js) and R, plus the Dash framework for analytical web apps
MIT Open source Free Local Nov 2, 2026T Salesforce · BI & dashboards
Salesforce's visual analytics platform: Tableau Desktop authoring (now with a free edition), Tableau Cloud and Server for sharing, and Tableau Next for CRM analytics
Proprietary Freemium Paid Local Self-hosted Nov 2, 2026T Typesense, Inc. · Vector databases
GPL-licensed in-memory search engine in C++ offering typo-tolerant instant search, faceting, vector and hybrid search, with Typesense Cloud hosting
GPL-3.0 Open source Free Self-hosted Nov 2, 2026BS Brave Software, Inc. · Search & web-data APIs
Developer API over Brave's independent web index offering web, news, image, video, LLM-context and grounded-answer endpoints on prepaid credits
Proprietary Freemium Usage-based Nov 2, 2026M Zilliz / LF AI & Data Foundation · Vector databases
Open-source vector database from Zilliz with Lite, Standalone and Distributed deployments, many index types and GPU acceleration
Apache-2.0 Open source Free Local Self-hosted Nov 2, 2026M Oracle · Relational databases
Oracle's widely deployed open-source relational database server, offered as a GPL community edition and commercial enterprise and cloud editions
GPL-2.0-only WITH Universal-FOSS-exception-1.0 Open source Free Self-hosted Broken