
Financial charts that stay smooth with a million candles
An open-source chart library for trading apps. Candles, heatmaps, order flow, indicators and drawing tools, rendered with WebGL2. Use the headless engine with your own UI, or add the ready-made toolbar and drawing rail. TypeScript, Apache-2.0.
ChartOn is an open-source chart library designed for trading applications, featuring WebGL2-rendered candles, heatmaps, and indicators. It supports a headless engine for custom UIs and includes a pre-built toolbar and drawing tools, licensed under Apache-2.0.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.