Fun

Phylopic

Free silhouette images of animals, plants, and other life forms, available for reuse under a Public Domain or Creative Commons license.

Web
Codingame

Coding and having fun

Wolfram Alpha

Wolfram Alpha is an AI assistant that does data analysis in a smart way.

Web Android iOS Window
Desmos

Desmos is a simple online charting tool that creates interactive charts.

Web
Graph.tk

Graph.tk is a dead simple online charting tool that creates interactive charts.

Web