Free diagram drawing software for windows

DiaCze - diagram drawing & modelling software.
You will be able to use DiaCze - diagram drawing software UML, ERD, ... in order to create UML, UML 2.0, EML diagrams, ER, ERD, state diagrams, network topology schema, Cisco networks, component models, process models, business models, ...
In many ways - this application contain more functions than Microsoft Visio and it is free.

Diagram Draw represents a easy-to-use diagram create software. The success of any enterprise depends not only upon the meticulous deduction but also in a great extent, on the way you communicate the information.
When intricate text information fails to satisfy your needs, Diagram Draw stretches a helping hand. Using a competently organized set of tools, you can create drawings and diagrams that will ease the process of data communication within your workgroup.
The creators of Diagram Draw did their best to provide users with auspicious working conditions. The workspace is organized to be comfortable and effective. You control your navigation using tabbed pages, store different data with custom properties and define objects shapes with size and position tools while such useful features as pan and zoom make your orientation in the project as easy as a pie.
The conjoint toolbar provides easy access to any tool. If you decide to add some text information to the diagram or drawing you wont need to use any external programs. To apply a text field, simply choose the Add Text command, which is available in the menu and on the toolbar.
Diagram Draw supports document recovery, so in case something goes wrong, the program will allow you to save files, and the valuable information wont be lost. As you see within one small but powerful program you get a solution for an enterprise of any size helping you to convey the information in a comprehensible form.

yEd Diagram Editor 3.0.0.5 is a program designed to enable you to fast generate drawings and apply layouts to diagrams, graphs, and networks. Choose from a wide range of highly sophisticated layout algorithms to automatically arrange your diagrams in no time. An intuitive and visually appealing user interface makes creating diagrams fun. Once you are done with creating a diagram you can save, print, or export it to popular formats like PDF, SWF, EMF, JPEG, GIF, XML, PNG, or SVG.

Enhancements: Supports multiple graphs simultaneously and palette tool window for instant access to graph elements with different (visual) characteristics.

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

Drawing Objects is a collection of 17 diagram components Drawing Objects is a collection of 17 diagram components to be used for runtime designing of organisational charts, flow charts, network diagrams, mind maps, family trees etc.
System requirements:
- Delphi version 7

Data Modeler is the right tool for drawing ER Diagrams for Windows. Data Modeler is the right tool for drawing ER Diagrams for Windows.
Data Modeler is a freeware, 32-bit, robust and easy to use tool with a lot of features.
Data Modeler will allow you to create, edit and save ER diagram with printing, printing preview and copying to clipboard (yes, you can paste in Ms-Word, etc.).
Data Modeler is being developed for compliance with the information engineering methodology, running a two in one conceptual and physical data modeling.

Net Activity Diagram (NAD) is a Windows 9x/NT/2000/ME/XP application that monitors your computer Internet activity. It monitors the main Internet protocols (TCP, UDP) and displays the amount of transferred data. NAD provides a simple and comfortable user interface, easy to understand setup and full control over the visualization process.