A truly object oriented graph plotting library with extensive documentation. Features include flexible scaling, several plot types, automatic legend generation, PNG/GIF/JPG support and much more!

• Free

This chart library comes with decent documentation and supports many plot types as well as multi-colored graphs.

• Free

Currently supports bar, line, area, pie and point plots and graphs and comes with some rough documentation to get you started.

• Free

Create a pie chart with your own statistical data.

• Free

A simple, yet powerful PHP tool to create attractive web charts from dynamic data.

• Free

This class can be used to generate line, bar and 2D/3D pie graphs from multiple data sets. Offers many style and data formatting options and an extensive readme and examples page. You can customize almost any option. It can be built from data defined in a programmatic way or with data import from XML or CSV files.

• Free

Create a bar chart with your own statistical data within a few minutes.

• Free

Create online 2D graphs. GD library is not required.

• Free

This class can be used to draw vertical bar charts using only HTML and CSS. It uses HTML tables to draw simple or grouped vertical bars from a set of values. The chart output is defined using HTML templates. It does not use any graphic library extension like GD. Many aspects of the chart are customizable.

• Free

Simple bar chart script that allows you to create a vertical graph for any application.

• Free
• $5

Create animated, interactive and data-driven Flash charts and graphs for your PHP appplications. You can use it with any database of your choice. It offers over 50 2D and 3D charting styles for you to choose from.

• $69

This class provides a nice interface for HTML-based charts graphs, for use when you don't have GD support or are looking for something simpler. The user sets up arrays, passes them to the functions and then the class takes care of the rest.

• Free