SLearnSeeing TheoryExplains statistics and probability with visual animations.seeing-theory.brown.eduOpen site
WNostalgiaWayback MachineA huge internet archive where you can see how sites looked in the past.web.archive.orgOpen site
RToolsRegex101Lets you test regular expressions with a step-by-step explanation.regex101.comOpen site
EWeirdEarth NullschoolWatch the world's wind and weather currents live on an interactive map.earth.nullschool.netOpen site
LWeirdLibrary of BabelA simulation of an endless library containing every possible text.libraryofbabel.infoOpen site