RealCADD!

LibreCAD (originally QCad then CADuntu) is an open source 2D CAD application for Windows, Apple and Linux. It is based on Qt, which is a leading cross-platform application and UI development framework.

DraftSight is a professional-grade, open 2D CAD product for users who want a better way to read, write and share DWG files. DraftSight is easy to use and is available for professional CAD users, students and educators to download and activate for free.*

nanoCAD is a pro-grade 2D CAD system with native DWG support and full customizability. It is totally free, for business, professional, or personal purposes. It is fast, lightweight, capable, and , unlike most free CAD programs, completely uncrippled. nanoCAD includes:1. Classic CAD interface. Any engineer could easily master nanoCAD since everything is in their right places: menu, button icons, panels, command line, and the commands theirselves are easily recognizable. This makes nanoCAD easy to migrate to since enterprise needs no time to retrain its engineers.2. Native *.dwg support. The world’s most popular file format for technical documentation - *.dwg – is the nanoCAD native file format. Project created using nanoCAD and saved as *.dwg file could be easily opened and edited in any CAD application supporting *.dwg which in turn makes nanoCAD perfect tool for project collaboration and sharing.3. Ultimate design tool. nanoCAD includes all necessary tools required for basic design and allows creating and editing 2D and 3D vector primitives, texts, tables, blocks, graphical technical documentation display and print settings using either a model or a sheet. »

A powerful CAD platform, with features familiar to you from native .dwg applications. BricsCAD® unifies advanced 2D design with the intelligence of 3D direct modeling. For Windows, Linux, and Mac.

QCAD is an application for computer aided drafting in 2D. With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schemas and diagrams. QCad uses the AutoCAD DXF file format internally and to save and import files. AutoCAD DWG support is available as a commercial plugin.

progeCAD Smart 2009 is a limited version of progeCAD . It is free for private, non-commercial use only. You need to register the software to continue using it after 30 days. Of course registration is totally free.

DoubleCAD XT is an free AutoCAD LT work-alike.

Free CAD software for your DWG and DXF files: A new 2D CAD product that provides professional CAD users, with a better way to read, write and share DWG files. Portable 2D CAD application for Windows with DWG/DXF supportRead & Write: DWG/DXF R10÷2010 | LiteCAD Drawing .LCD Languages: English, Czech, French, German, Russian, Spanish

MEDUSA4: The comprehensive 2D/3D design automation suite for mechanical, plant, construction and automotive engineering

Industrial strength, user-friendly 2D/3D CAD package.Specialised Toolkits to enhance your productivity.Control Centre allows easy access to symbols, hatching, text, dimension and line styles.Enhanced bitmap capability can load 300 large images.Full compatibility with the latest DWG/DXF formats.On-going Development and unbeatable local support.

All the productive tools and smart features for 2D drafting and design that you expect at a reasonable price. With DWG 2010 as its primary drawing file format and DXF support.

CAD 2D/3D by STS

2D CAD system with user friendly graphical interface.Support drag & drop and clipboardContextual menu and dynamic dimensioningAdvanced mask symbols and layers.Includes basic libraries of symbols for architectural design, mechanical, home office furniture, electrical, electronic, systems, territory.Snapping to substantial points of graphic entities.Contextual online help system.Print Manager: all formats handled by the operating system.Input/output with other CAD systems by means of the DXF format (up to version 12).Reading BMP, GIF, PCX, TIF, TGA, XBM, IAX, IMG.Integrated scientific calculator with formula interpreter.C\C ++ language programming (Windows)-REXX (OS/2). »

The product fully complies to current market standards as regards office automation software and design. The user interface, compatible with Office 2000 ® is a simple and friendly work environment that allows you to be up and running quickly. Compatibility with AutoCAD ® DWG format is complete: BlueCAD supports read and write the DWG format from version 2.5 the latest version 2007 (2000 in writing).