hopefully a link to all the below
http://web.mac.com/statsmonkey/StatsMonkey/Online_Resources.html

Ross-Chance Applets
http://www.rossmanchance.com/applets/

Worksheet to go with above

Monty Hall Game Applet
http://socr.ucla.edu/htmls/game/MontyHall_Game.html

CLT Illustrator
http://www.mathcs.org/java/programs/CLT/clt.html

Boxplot Grapher
http://www.pierce.ctc.edu/dlippman/apps/boxplot.html

Gap Minder: interesting graphing technique (floating circles)
http://tools.google.com/gapminder/

Choose Mice Randomly (good)
http://www.causeweb.org/mouse_experiment/

WinStats software: http://math.exeter.edu/rparris/winstats.html

Statistics Online Applets

Correlation Practice: http://www.stat.uiuc.edu/courses/stat100/java/GCApplet/GCAppletFrame.html

Regression Line: http://illuminations.nctm.org/LessonDetail.aspx?ID=U135

Applets: http://www.bbn-school.org/us/math/ap_stats/

chi square test
http://www.amstat.org/publications/jse/v16n3/ChiSquareApplet.html

Distributions: http://wiki.stat.ucla.edu/socr/index.php/SOCR_EduMaterials_DistributionsActivities

http://www.socr.ucla.edu/htmls/SOCR_Modeler.html

A good collection of applets
http://www.rossmanchance.com/applets/index.html

Probability Applets

http://wiki.stat.ucla.edu/socr/index.php/EBook#Chapter_III:_Probability

http://wiki.stat.ucla.edu/socr/index.php/SOCR_EduMaterials_Activities_DieCoin

http://wiki.stat.ucla.edu/socr/index.php/SOCR_EduMaterials_Activities_CardsCoinsSampling

http://wiki.stat.ucla.edu/socr/index.php/SOCR_EduMaterials_ExperimentsActivities

Regression and Correlation

http://www.socr.ucla.edu/htmls/game/SOCR_ScatterPlot_Game.html

http://wiki.stat.ucla.edu/socr/index.php/SOCR_EduMaterials_AnalysisActivities_SLR

http://www.bc.edu/research/intasc/library/correlation.shtml

http://stat-www.berkeley.edu/~stark/Java/Html/Correlation.htm