Bar Grapher
http://www.gamequarium.com/data.html
Create a bar graph

 Create a Graph
http://nces.ed.gov/nceskids/createagraph/
Walks students through the steps to making several types of graphs online. This program is quick and easy to use. When done, students have a professional looking graph that is ready to print.

 Explore Graphs
http://www.42explore.com/graphs.htm
Links to multiple sites which deal with manipulating and using charts and graphs.