data-forge
The JavaScript data transformation and analysis toolkit inspired by Pandas and LINQ.
amcharts
The most advanced amCharts charting library for JavaScript and TypeScript apps.
OpenSpace
This is the official GitHub repository for OpenSpace: an open source astrovisualization project. For instructions on how to build and run OpenSpace, see the Getting Started Guides on the wiki page at http://docs.openspaceproject.com.
jkriege2
an extensive Qt5 & Qt6 Plotter framework (including a feature-richt plotter widget, a speed-optimized, but limited variant and a LaTeX equation renderer!), written fully in C/C++ and without external dependencies
keen
https://keen.io/ JavaScript SDKs. Track users and visualise the results. Demo http://keen.github.io/keen-dataviz.js/