Based on our record, Processing.js seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
With processing.js I think you mean p5.js, since the development of processing.js has been archived in 2018 (https://github.com/processing-js/processing-js ). Source: over 2 years ago
p5.js - JS library for creating graphic and interactive experiences
Cairo - Cairo is an open-source 2D graphics library released under the GNU Lesser General Public License with support for several output devices.
Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.
Anti-Grain Geometry (AGG) - Anti-Grain Geometry (AGG) is an open-source 2D graphics library that provides you with tools to create multiple shapes and also comes with detailed documentation for explaining all the important concepts.
GoJS - GoJS is a JavaScript library for building interactive diagrams on HTML web pages. Build apps with flowcharts, org charts, BPMN, UML, modeling, and other visual graph types.
PlotDevice - PlotDevice is a graphics language for tinkerers, designers, developers and is written in Python.