Perspective is an interactive analytics and data visualization component for large and streaming datasets. Build user-configurable reports, dashboards, notebooks, and applications with a high-performance query engine compiled to WebAssembly, Python, and Rust.

• A framework-agnostic user interface packaged as a Custom Element, which connects to a Data Model in-browser (via WebAssembly) or remotely (via WebSocket, with integration in Python, Node.js and Rust). Includes a data grid, 10+ chart types line, bar, area, scatter, heatmap, treemap, sunburst, candlestick, and more.

• A Data Model API for pluggable engines, enabling Perspective's UI to query external data sources like DuckDB while translating view configurations into native queries.

• A fast, memory-efficient streaming Data Model built-in, written in C++ and compiled for WebAssembly, Python, and Rust. Supports read/write/streaming for Apache Arrow, with a columnar expression language based on ExprTK.

• A JupyterLab widget and Python client library for interactive data analysis in notebooks.

• Project Site
• User Guide
• JavaScript API
  • @perspective-dev/client Browser
  • @perspective-dev/client Node.js
  • @perspective-dev/client Clickhouse Virtual Server
  • @perspective-dev/client DuckDB Virtual Server
  • @perspective-dev/viewer Web Component
• Python API
  • perspective
  • perspective.widget
  • perspective.handlers.aiohttp
  • perspective.handlers.starlette
  • perspective.handlers.tornado
  • perspective.virtual_servers.clickhouse
  • perspective.virtual_servers.duckdb
• Rust API
  • perspective
  • perspective-client
  • perspective-server
  • perspective-python
  • perspective-js
  • perspective-viewer

The Perspective project is a member of the The OpenJS Foundation.

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