https://www.kutasoftware.com/free.html
http://prep.math.lsa.umich.edu/pmc/
National Library of Virtual Manipulatives
Ms. Weigand's Links!
free videos but must join site http://www.brightstorm.com/
Drill on finding limits http://archives.math.utk.edu/visual.calculus/1/limits.15/index.html
Drill on continuity of piecewise functions http://archives.math.utk.edu/visual.calculus/1/continuous.3/index.html
Drill on finding horizontal asymptotes http://archives.math.utk.edu/visual.calculus/1/horizontal.3/index.html
Drill on finding vertical asymptotes http://archives.math.utk.edu/visual.calculus/1/vertical.1/index.html
Quiz on limits http://archives.math.utk.edu/visual.calculus/1/limits.19/index.html
Quiz on Continuity http://archives.math.utk.edu/visual.calculus/1/continuous.9/index.html
Demonstration of Intermediate Value Theorem http://archives.math.utk.edu/visual.calculus/1/continuous.7/1.html
http://www.hippocampus.org/Calculus
http://tutorial.math.lamar.edu/
Short Youtube videos on many calculus topics http://www.khanacademy.org/
visualizing local linearity http://www.ima.umn.edu/%7Earnold/graphics.html
many topics http://www.sosmath.com/calculus/calculus.html
flash cards for calculus facts http://mathmistakes.info/facts/CalculusFacts/index.html
"Stuff you must know cold for Calculus" http://covenantchristian.org/bird/Smart/Calc1/StuffMUSTknowColdNew.htm
Slopefields
applet to create slope fields and graph particular solutions http://www.math.lsa.umich.edu/courses/116/slopefields.html
http://www.ltcconline.net/greenl/courses/106/ApproxOther/slopeFields.htm
http://www.sosmath.com/diffeq/slope/slope1.html
http://calculuslab.deltacollege.edu/ODE/7-1/7-1-0-h.html
Riemann Sum applet http://www.math.lsa.umich.edu/courses/116/riemannsums.html