Webmasters : Graphix - CodeCanyon | 1 MB
Graphix is a powerful graph and chart plugin which produces beautiful and stunning looking graphs. It offers an animated UI with a very easy to interface. Graphix uses tables to create graphs which makes it way easy to work rather than stuffing data into arrays and variables which other plugins provide

Types of graph/charts -
Bar graphs with multiple datasets.
Line graphs with multiple datasets.
Area graphs with multiple datasets.
Bubble graphs with multiple datasets.
PIE Charts.
Gantt chart with multiple datasets.
Features Include -
Supports 6 graphs
Degrades to table if javascript is disabled.
Elegant UI.
Animated Interface
Very easy to use
Extensive documentation.