This is a list of free and open source 2D CAD (computer-aided design) software packages.
The Draft Workbench allows you to draw simple 2D objects, and offers several tools to modify them afterwards. It also provides tools to define a working plane, a grid, and a snapping system to precisely control the position of your geometry.
The created 2D objects can be used for general drafting in a way similar to Inkscape or Autocad. These 2D shapes can also be used as the base components of 3D objects created with other workbenches, for example, the Part and Arch Workbenches.
FreeCAD is primarily a 3D modelling application, and thus its 2D tools aren't as advanced as in other drawing programs.
LibreCAD is a free Open Source CAD application for Windows, Apple and Linux. Support and documentation is free from our large, dedicated community of users, contributors and developers.
With a familiar user interface, easy-to-use tools that comply with the most popular drafting standard capabilities to simplify your experience, Solid Edge 2D Drafting has everything you need to quickly and easily create 2D documentation. Solid Edge 2D Drafting offers simple drawing layout, diagramming, annotation, and dimensioning controls that automatically comply with drafting standards, including the International Standards Organization (ISO), American National Standards Institute (ANSI), and British Standards Institution (BSI), among others.
Start your drawing from scratch, or easily import existing .DWG files. An optional step-by-step wizard allows you to preview the drawing, including each individual layer, and control background color, drawing size, line type, font, and more.
When you’re finished, you can save your file as either a Solid Edge or .DWG format, allowing you the flexibility to collaborate with customers, peers, and partners, and to easily open your 2D CAD files in nearly any 3D CAD program.
NanoCAD is an easy-to-use 2D CAD application that delivers a great user experience by providing high performance, full capability, a classic interface and native .dwg format support. NanoCAD has been built to deliver design and project documentation for all industries. nanoCAD includes a full suite of basic and advanced tools, for creating industry-standard DWG-compatible CAD files. NanoCAD provides innovative, collaborative and customizable features to enhance your efficiency. nanoCAD includes several APIs, allowing anything from routine task automation to complex CAD application development. All for free.
QCAD is a free, open source application for computer aided drafting (CAD) in two dimensions (2D). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. QCAD works on Windows, macOS and Linux. The source code of QCAD is released under the GPL version 3 (GPLv3), a popular Open Source license.
QCAD Application WindowQCAD was designed with modularity, extensibility and portability in mind. But what people notice most often about QCAD is its intuitive user interface. QCAD is an easy to use but powerful 2D CAD system for everyone. You don't need any CAD experience to get started with QCAD immediately.
DoubleCAD™ XT is an AutoCAD LT® work-alike. But free.
It's also 5-Star Rated from the editors at CNET... and the #1 most downloaded free CAD at Download.com.
Powerful 2D CAD capabilities — and great .DWG and .SKP compatibility — make DoubleCAD XT an invaluable free companion for AutoCAD® and SketchUp™ users alike...
...and the best alternative to AutoCAD LT on the market.
With so many new, innovative features, DoubleCAD XT may be the free AutoCAD LT upgrade you've been looking for:
Self-healing walls (ADT compatible)
NEW Power Stretch Tool
NEW Purge Tool
Draw order by layer
NEW Draw order by layer PLUS
Hide objects regardless of layer
Object snap prioritization
Hatch pattern editor
Advanced polyline editing
Automatic scaling of units between drawings
Parametric variable palette
Input multiple unit types on-the-fly
Enhanced format painter
Fixed ratio ellipses tools
Superior workflow with Google™ SketchUp and SketchUp Pro
Open & save .DWG, .DXF, and .DWF formats from AutoCAD R14 to 2012
Community forum with active members
... and more.