Free vector drawing software for windows

Vector Trance is a screensaver based on mathematical display of vector based lines that will enhance your desktop. Vector Trance is a screensaver based on mathematical display of vector based lines that will enhance your desktop.
Its a calming mathematical visual display of vector based lines.
It also has mixed up a cool soundtrack to go along with it, so download the executable and get into the Vector Trance.

Vector Chat - Peer to peer chat program where you can draw to your buddies as well as type to them.
Main features:
- Direct Connect
- Instant Messaging
- Drawing Toolkit
- Save/Export Drawings
- File Transfer
- Bookmarks
Shortcuts & Tricks :
When you are drawing a picture, you can change tools by right-clicking.
The user does not have to type any message to send one, they may simply choose to press the send button and send a null string. This is not a bug, its a feature!
Your background color is seporate from that of the remote user. However, it is possible to "sync" your background with theirs. This proporty can be set via an obviously placed checkbox.
Bookmarks not only save the address, port, and name of the remote user, they also save your window style (position, size, etc.)
You can use the "packet size" preference to "cap" you upload. Every second exactly, VectorChat sends only one packet. Downloading has no cap, nor will it ever.
You can drag the bar seporating the field in which you type, and the field where the chat text appears.
You may undo only the last object you have drawn. In the future, multiple levels of undo may be available.
If you are lazy, like I am, you can type "/away" (with no message string) in place of "/back".
For those of you who want to edit saved files in a text editor, the format is simple enough to reverse-engineer. Go for it!

AutoCAD Drawing Viewer is a powerful tool for viewing AutoCAD drawing files.
Main features:
- View and open drawings
- view block attribute values
- view text values
- view layer information
- print drawings
- copy drawing to ClipBoard
- save drawing as a BMP file
AutoCAD Drawing Viewer does not require AutoCAD to run and is compatible with all AutoCAD drawing versions.

Draw online and share the resulting image on the web with one click using the Draw Pad Opera widget The Drawing Pad widget for Opera browser is a fast, easy and fun way to create a sketch, road map, ecard, graffiti, pixel art, etc.
After you finished your drawing you can press save and the picture will be saved on a website providing you with the url to your image so you can share it with your friends.
System requirements:
- Opera 9 or later

C++ vector and matrix classes for scientific computing designed for general matrix algebra calculations with real numbers. These classes have a rich set of vector and matrix constructors, methods and functions for file input and output in different formats, conversion, matrix inversion, LU and SVD matrix decompositions, matrix exponentiation and solving sets of linear equations.

Intended to simplify the drawing of various elements in 32 Bit Visual Basic and VBScript based programs while it utilizes the built in offscreen device context drawing features of the Windows 95/NT operating systems for the fastest drawing effects. You can use CSDrwCtl to draw your own ActiveX Controls in VB5 with the techniques used by professional Windows programmers.

The incredible shrinking vector
graphics editor, only 55K bytes yet
extremely powerful -- has to be seen to
be believed. Popularity growing in
leaps and bounds. True freeware.