DRAFTSIGHT

DraftSight is a free*, professional-grade 2D CAD product centered upon an open business model. Available for download at DraftSight.com, DraftSight provides users with a better way to create, edit and view DWG files. Based on an advanced architecture, DraftSight generally takes a few minutes to download and runs on multiple operating systems, including Microsoft® Windows XP®, Windows Vista®, Windows® 7, the Mac®, and Linux® (Mac® and Linux® currently in Beta). DraftSight is available for all users, including CAD professionals, students and educators.

DraftSight can be used to:
- Create 2D drawings
- Update and maintain.dwg and .dxf files
- Create PDF files
- Exchange files with companies who either provide or require data saved in either.dwg or .dxf file formats.

sumber : http://www.craftsmanspace.com/free-software/free-2d-cad-software.html

POWERDRAW

PowerDraw is a 2D vector draw application.  You can download this drawing application free of charge and use it with no limitation.

Features:

    Using mouse actions or control methods to handle drawings.
    Drawing line, polyline, rectangle, polygon, bezier, circle, ellipse, arc, pie, chord and text on the Designer Canvas.
    Modifying the drawed figures.
    Using layers and layer operations like merging.
    Using all colors possible.
    Using different style of pens with diffrent widths.
    Using different style of brushes (including hatches) to paint drawings.
    Creating text objects with any font installed in the system.
    Saving the drawing as file and opening the file as drawing.
    Printing the file to the printer and/or plotter.
    Making unlimited Undo.
    Cutting, copying, pasting and deleting the figures.
    Grouping and ungrouping the figures.
    Ordering the figures (SendToBack, BringToFront, etc.)
    Rotating, scaling and mirroring the figures.
    Making polar and rectangular figure arrays.
    Aligning the figures in any style.
    Inserting bitmaps or jpeg pictures to the drawing.
    Scaling, rotating, mirroring,skewing and flipping bitmaps.
    Inserting WMF/EMF files as editable objects.
    Exporting the drawing as WMF file.
    Using plugins developed as DLL in a special structure(documented).
    Making macros in pascal-like language and running them in the designer.
    Using trace guides(in several angles) when drawing.
    Zooming and panning, viewing the drawing in any scale.
    Using page formats like (A4,letter, etc.) or custom sizes.
    Making block from figures and adding it to the librarry.
    Using block librarries, inserting blocks.
    Snapping the mouse actions to grids, guidelines or the current objects.
    Using grids and guidelines.
    Using vertical and horizontal rulers.

sumber : http://www.craftsmanspace.com/free-software/free-2d-cad-software.html

The CAD System For Everyone

QCAD is an application for computer aided drafting in two dimensions (2d). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schemas and diagrams. QCAD works on Windows, Mac OS X and many Linux and Unix Systems. The source code of the QCAD community edition is released under the GPL (Open Source).

The current stable version of QCAD is 2.2.
The next release will be QCAD 3 which is currently available as a Beta version. If you purchase QCAD now, you can also try out the QCAD 3 Beta and later update to the final QCAD 3 release for free!

The QCAD Application Window

QCAD was designed with modularity, extensibility and portability in mind. But what people notice most often about QCAD is its intuitive user interface. QCAD is a simple 2D CAD system for everyone. You don't need any CAD experience to get started with QCAD immediately. You can download a free trial version and try QCAD today. 

sumber : http://www.qcad.org/qcad.html