PC Plotter
Offers a marine chart plotter that operates on a personal computer or laptop.
http://www.pcplotter.com

MasterGraphics
MasterGraphics is a value-added solutions provider with a practical approach to technology systems helping design-intensive businesses work smarter, harder and more profitably. We help you innovate by taking your design data further: We make it work.
http://www.masterg.com/

Graphics::Plotter
CPAN module for the C++ GNU plotter library.
http://www.klaban.torun.pl/prog/libplot/

kmplot
A mathematical function plotter for the KDE-Desktop
http://home.foni.net/~kdmoeller/kmplot/

Easyspec
A small spectrum-analyzer like plotter.
http://www.billauer.co.il/easyspec.html

Starmap
Interactive night sky plotter. [freeware - Windows]
http://webpages.charter.net/thegl/starmap.html

Tomas Helm
Wartungs- und Reparaturservice für HP DesignJet-Plotter.
http://home.debitel.net/user/ot.printerfit/

Graficord
Manufacturers Of Process Control Instruments, Chart Recorder Pen, Disposable Type Marking Systems, Disposable Type Fiber Tip Pens, Chart Recordrs Accessories, Graficord, Thane, India
http://www.graficord.com/

Fortran 77 Diagram Graphical GOTO Plotter
Flowcharting utility.
http://www.deater.net/weave/vmwprod/f77_diagram/

Ping Plotter
Ping Plotter is a network troubleshooting and diagnostic tool. It uses a combination of traceroute, ping, and whois to collect data quickly - and then allows you to continue to collect data over time to give you the information you really need to identify problems (both short-term and long-term trends)
http://www.nessoft.com/pingplotter/