GoJS

Virtual whiteboard for sketching hand-drawn like diagrams

Bring data to life with SVG, Canvas and HTML. :bar_chart::chart_with_upwards_trend::tada:

Apache ECharts is a powerful, interactive charting and data visualization library for browser

The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.

whiteboard SDK / infinite canvas SDK

Umami is a simple, fast, privacy-focused alternative to Google Analytics.

? visx | visualization components

Go language library for reading and writing Microsoft Excel? (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets

Open-source JavaScript charting library behind Plotly and Dash

Luckysheet is an online spreadsheet like excel that is powerful, simple to configure, and completely open source.