LibreCAD is a free, open source, slim, cross-platform and multi-language 2D CAD application developed by R. van Twisk.

A9CAD is a free, lightweight, multiple-document interface and simple two-dimensional computer-aided design and drafting utility for Windows developed and released by A9Tech.

DraftSight is a free, cross-platform, professional level design, drafting, engineering and architectural sketching application that allows to create, open, save, edit and view DWG, DXF, DWT files, you can use it as an alternative to Autodesk AutoCAD.

Diagram Designer is a free, simple, open source and slim vector graphics editor developed by Michael Vinther, you can use it as a free alternative to Microsoft Visio.

PCB( Printed Circuit Board Layout Tool ) is a free printed circuit board editor application which place different components in different layers, this feature is similar to Adobe Photoshop, you can turn a layer’s visibility on or off, then add, … Continue reading →

Early this month we reviewed TinyCAD, which is a freeware for designing circuit diagram. Logisim( LODJ-uh-sim ) is a free, open source, lightweight, easy-using, cross-platform, multi-language and portable alternative to TinyCAD which is suitable for students, it can be used … Continue reading →

The CPU( central processing unit ) is the brain/heart of the computer, notebook, netbook, iPad, iPhone, iPod, Android mobiles and BlackBerry, it’s actually an electronic circuit, TinyCAD is a free and open source circuit diagram design software for Windows, you … Continue reading →