DISLIN for Open Watcom compilers wcl, wfl 

DISLIN is a high-level and easy to use plotting library for displaying data as curves, bar graphs, pie charts, 3D-colour plots, surfaces, contours and maps. Several output formats are supported such as X11, VGA, PostScript, PDF, CGM, PNG and TIFF.
scientific plotting library programming

Easy Chart 3D GEO 

Easy Chart 3D GEO is easy to use graphical reporting tool for effortless generation of business, management, financial and ad-hoc pie charts (Cylinders and Cubes also supported) of professional quality. Oracle, Microsoft SQL, Access and ODBC support
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2D/3D Pie Chart & Graph Software 

3D Pie Chart provides both a client and server side solution for the incorporation of pie charts into web pages. Versatile components enable web authors and Java developers to easily build and publish dynamic and interactive pie charts.
chart graph pie chart pie graph

csDrawGraph 

This ASP component draws pie and bar charts and line graphs "on the fly". Output options include GIF, PNG, JPG and BMP. Stream to browser or save as a file. A wide range of properties allow the customisation of colour, size and text style.
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diskSpace Explorer Network Edition 

diskSpace Explorer 3 Network Edition shows the used/wasted space for files/folders using an interactive pie chart and reports how much space is wasted on drive due to the cluster size.
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Disk Size Manager 

Disk Size Manager - a powerful hard disk space manager. Using Disk Size Manager you can keep track of your hard disks space to ensure its most efficient use. With its 2D/3D pie and bar charts as well as detailed descriptions in words.
disk tools disk utility disk space management directory size folder size hard disk hard drive