AlphaChart

A canvas-based financial charting library for React and Next.js with a full UI: candlesticks, 77 built-in indicators, drawing tools, symbol comparison and real-time data — plus a Lite entry point for general-purpose charts.

14 chart types, 77 indicators with a registry for custom ones, drawing tools with time-anchored points, symbol comparison, real-time push of incoming bars, synchronised crosshairs across charts, permissions, three configurable legends, themes and CSS variables, state save and restore, screenshots, and an event and channel API. AlphaChart Lite adds line, area, bar, scatter, pie, radar, gauge, heatmap, treemap, funnel and geo charts.

The chart is an object, not a component: you hold it, call methods on it and render it where you like, so there is no provider, context or controlled props. Two entry points share no runtime. The package is built with Vite in library mode, type-declared and tested with Vitest, and documented as one file per topic with an index that lists each file's token cost for AI-agent use. It runs inside AnalyzeAlpha and SovereignTerminal.