Knowtex

xkcd is a webcomic created by Randall Munroe. The comic's tagline describes it as "a webcomic of romance, sarcasm, math, and language." It has been recognized in such mainstream media as The Guardian and The New York Times.

A brief technical illustration of a DDoS attack to clarify.

xkcd comic about password strength

This is a chart of the ionizing radiation a personn can absorb from various sources.

These charts show movie character interactions in Lord of the Rings, Star Wars, Jurassic Park, 12 angry men and Primer.

Map about online communities.