Plotly Chart-Studio
An excel like sheet, but with much more graphics power, for any king of charts and combinations of it. Steep
2D Graphics
All about computer 2D graphics, colors and art. It includes image editors, converters and optimizers, color palette designers, diagram and whiteboard tools, and free image libraries.
You will find image editors, converters, compressors and SVG optimizers here, together with color palette designers, color pickers, contrast checkers and color blindness simulators. The category also covers diagram makers, whiteboards and wireframing tools. Favicon and texture generators and free stock image libraries complete the selection.
EasyEDA Electronic Circuit Designer
Perfect tool to online design electronic circuits (PCB). Exists online (registration is required) or downloadable standalone Windows, Linux and macOS.
WBO Online Whiteboard
Free online collaborative/shared whiteboard: you can draw eitheron the public whiteboard, accessible to all. For curiosity only, but you may
Excalidraw Free Online Whiteboard
One of the most famous free online collaborative whiteboard, used by Google or Meta for their own applications or needs.Many
Dustsim Free Dust / Particles Simulator
An extremely addictive dust and particles simulation: add particle sources, attraction or repulsive fields (that you can move manually live
Mandelbrot Explorer
Walk through an interactive 2D view of 5 types of fractals and variants: Mandelbrot, Burning ship, Tricorn, Cubic Mandelbrot, Cubic