XY

XY is a Python charting library for interactive data visualization with high performance.

XY is a Python charting library for interactive 2D visualizations that handle millions of points while maintaining performance. It uses native Rust kernels to aggregate data before display and binary transport to keep numbers out of JSON. Python teams use it to compose marks, axes, legends, and controls while branding them with CSS, Tailwind, and theme tokens. The library supports outputs in notebooks, applications, and standalone HTML, PNG, or SVG formats. It is built for workflows requiring both high data capacity and strict design control.

XY at a glance

Best for: Software engineer, Researcher
Runs on: Web
Pricing: Free
Released: July 2026
Category: AI coding tool
Website: reflex.dev

Key features

Plot millions of points with pan, zoom, and hover
Style charts with CSS or Tailwind
Native Rust kernels for data aggregation
Binary transport for performance
WebGL2 client rendering
Export to HTML, PNG, and SVG
Support for notebooks and dashboards

Use it for

Visualize millions of data points interactively
Build custom branded dashboards in Python
Export charts to HTML, PNG, or SVG
Analyze real-time and streaming data

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