Directory

6 tools

Observable, Inc. · Data visualization

Modular JavaScript library for bespoke, data-driven web graphics: scales, axes, shapes, layouts, geo projections, transitions and DOM selections

ISCOpen sourceFreeLocalNov 2, 2026

Matplotlib

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 sourceOpen sourceFreeLocalNov 2, 2026

Observable

Observable, Inc. · Notebooks & interactive computing

JavaScript data notebooks and the open-source Observable Framework static-site generator for data apps, from the maintainers of D3 and Plot

ISCFreemiumPaidLocalNov 2, 2026

Plotly

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

MITOpen sourceFreeLocalNov 2, 2026

Tableau

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

ProprietaryFreemiumPaidLocalSelf-hostedNov 2, 2026

Vega-Altair

Vega-Altair developers (Vega project) · Data visualization

Declarative Python visualization library that compiles concise chart specifications to Vega-Lite JSON for interactive, grammar-of-graphics plots

BSD-3-ClauseOpen sourceFreeLocalNov 2, 2026

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