Karbon
Karbon is a vector drawing application with an user interface that is easy to use, highly customizable and extensible. Karbon from KOffice.org

Microsoft Visio Microsoft Office Visio 2007. Visio Educational Shapes, Microsoft download link. Office Visio 2007 for Students, academic shapes from Microsoft.
Mathematics: 3-D Geometry, Analytical Geometry, Angles, Circles & Ellipses, Common Functions, Exponential, Logarithmic, and Power Functions, Hyperbolas and Parabolas, Plane Geometry, Sets, Sine, Cosine, and Tan.

SVG SVG (Scalable Vector Graphics) is an open W3C standard for describing two-dimensional graphics.
SVG is a language for describing two-dimensional graphics and graphical applications in XML.
Drawing software, like Inkscape, saves drawings in SVG format.

Adobe IllustratorAdobe Illustrator CS4 Adobe® Illustrator® CS4 software is a comprehensive vector graphics environment.

DiaDia is a gtk+ based diagram creation program released under the GPL license.

Dia Homepage

Dia is available for Microsoft Windows. Version 0.97 from Softonic.com.

Dia Links.

CorelDRAWCorelDRAW Graphics Suite X4

Google SketchupGoogle Sketchup, to create, modify and share 3D models.

InkscapeInkscape review from Linux Journal.

Download page for Mac OS/X, Linux and Windows.

Guide to a Vector Drawing Program

Un-official manual by Kevin Wixson

KarbonKarbon is a vector drawing application with an user interface that is easy to use, highly customizable and extensible.

Karbon from KOffice.org

Microsoft VisioMicrosoft Office Visio 2007.

Visio Educational Shapes, Microsoft download link.

Office Visio 2007 for Students, academic shapes from Microsoft.

Mathematics: 3-D Geometry, Analytical Geometry, Angles, Circles & Ellipses, Common Functions, Exponential, Logarithmic, and Power Functions, Hyperbolas and Parabolas, Plane Geometry, Sets, Sine, Cosine, and Tan.

SVGSVG (Scalable Vector Graphics) is an open W3C standard for describing two-dimensional graphics.

SVG is a language for describing two-dimensional graphics and graphical applications in XML.

Drawing software, like Inkscape, saves drawings in SVG format.