Free Diagram Software To Replace Visio for Diagramming Purpose

List of diagram software that capable to replace MS Visio for diagramming purpose:

Dia - Open source diagramming software
An open source diagram creation program released under the GPL license. Dia diagramming software can be used to draw many different kinds of diagrams such as entity relationship diagrams, UML diagrams, flowcharts, network diagrams, simple circuits and much more.
Dia free diagramming software even can print diagrams that span multiple pages, export to many formats (EPS, SVG, CGM and PNG), and the ability to use custom shapes created by the user as simple XML descriptions.

Gliffy - Online Diagramming Creator
Online diagram creator tool that works entirely in your browser for diagramming purpose. Gliffy personally can consider as web based Visio killer diagram tools which able to draw a various types of diagram like Flow Chart, Development process, Web Layout, Floor plan, Class diagram, network diagram and etc.
Plus more, you can simple sign up Gliffy online diagram services freely and start drawing and assemble your diagram online.

Kivio - KOffice Diagramming and flowchart tools
Kivio is a diagramming and flow charting application with tight integration to the other KOffice applications. It enables you to create network diagrams, organization charts, flowcharts and more.

Network Notepad - Free Network diagram software
a network diagram application that let you draw out interactive network diagrams, with user definable management features such as point and click telnet, FTP, HTTP and Ping. Drawing network infrastructure diagram using network notepad is simple. All you need is drag and drop network object on the interface. Meanwhile, you’re able to use the F1-F6 keys as hotkeys to ping, surf, or telnet to a device once IP addresses on network devices object.

Diagram Designer - free Simple Diagram software
a simple vector graphics editor for creating flowchart and diagrams. Its features are customizable template object palette, slide show viewer, import/export WMF, EMF, GIF, BMP, JPEG, PNG, MNG, and PCX images, simple graph plotter to plot mathematical expressions, spellchecker, advanced pocket calculator with equation solver, MeeSoft Image Analyzer integration for bitmap image editing and extended file format support, and uses compressed file format for minimizing drawing file size.

GoVisual Diagram Editor
GoVisual Diagram editor (GDE) provides powerful diagramming functionality for editing and automatic layout of diagrams. Their diagrams are represented in form of graphs and cluster graphs. Plus more, all diagram can been printing or export to JPEG, PNG, BMP, and SVG are included.

yEd Diagram Editor - Free Diagram Editor
a free diagram software that able to create flow charts, UML diagrams, mind maps, and many other kinds of 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.
So, there is no need to paid few hundred to use MS Visio. Since there are a lot of alternative diagram software can be replaced MS Visio for diagramming purpose. If you know any free diagram software is nice and can be replace MS Visio, let us know and share with our reader.