JFreeChart
The official home page of the JFreeChart project.
http://www.jfree.org/jfreechart/

Chart2D
Chart2D is a library written in Java for adding 2D charts to Java programs (or for exporting them to images).
http://chart2d.sourceforge.net/

SimpleChart
SimpleChart is an easy to use ASP chart component for VB and .NET developers who want to add charts and graphs to software applications. SimpleChart is an ActiveX chart control that can be used in development languages such as Visual Basic, C# and Visual C++.
http://www.simplechart.net

ChartDirector Charting
Professional chart and graph component and control library for ASP/COM/VB/.NET/Java/JSP/PHP/Perl/Python/Ruby/ColdFusion/C++. Fast, Flexible, Network Friendly, Interactive, Easy to use.
http://www.advsofteng.com/

QI Macros for Excel
Lean Six Sigma SPC Software for Microsoft Excel $139 - Draws control charts, histograms, paretos, fishbones, FMEA, DOE, GageR&R, QFD, Ishikawa. Works in all versions of Excel 95-2004, Windows 95+, and Macintosh OSX, OS8-9.
http://www.qimacros.com/Macros.html

IWA Slide Charts
IWA Slide Charts designs and manufacturers custom slide charts, wheel charts, calculators, and drawing templates.
http://www.iwaslidecharts.com/

Creating Charts with GD::Graph
Sample code for creating charts using the Perl GD module: line/bar/area and pie charts.
http://linuxgazette.net/issue83/padala.html

Kokusai Chart Corporation of America
North American supplier for recording charts and consumables for test and measurement data recorders and loggers. Strip charts, z fold, roll, and circular charts available for most recorders.
http://www.kokusai-usa.com

Datalizer Slide Charts, Inc.
Custom slide charts developed and produced in our plant. Send your data for a professional mechanical design, working layout and quote - No Charge. Datalizer is the supplier of choice for leading companies seeking to present concise, accurate answers for complex marketing and technical information. We use specialized production equipment to manufacture cost effective, high quality slide charts. Accurate printing, die cutting and assembly processes are critical when manufacturing plastic and paper board slide charts, wheel charts, data wheels, and precision technical slide chart devices. From idea to finished product, we do it all.
http://www.slidecharts.com/

Swiftchart
java chart, chart applets, and chart servlets for dynamic charts and graphs within web pages, java applications and web applications
http://www.swiftchart.com/