Use the BAR_GRAPH class to create horizontal / vertical bar-graphs and progress bars. You can create simple graphs and even grouped bar-graphs with legends, add labels, change colors etc. No graphics or libraries (GD etc.) required. Version 2 has been completely rewritten and adds some more features to modify the graph design.
Cost: 2.2
Version: Free for private use / €6
Platform: Tested on Win: IE6, NN7, Op7; Mac: IE5, Sa1