Free Mechanical Engineering
CAD Software

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2D/3D CAD Systems
Electrical CAD Systems
Ship CAD Systems
Architectural CAD Systems
CAD Management Systems
Animation Software
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2D/3D CAD Systems
Creo/Elements Direct Easy to use and free 3D CAD modeler. It does not use history based modeling, instead click directly anywhere on the model to add or adjust features. It is a lighter version of their commercial product so assemblies are limited to 60 parts.
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Created by PTC Inc.
Operating System: Windows
DesignSpark Mechanical Free gesture based direct modeling 3D CAD software that is powered by SpaceClaim. There is no limit to the number of assembled components. Online electrical CAD components can also be downloaded and imported into your model.
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Created by RS Components Ltd
Operating System: Windows
DraftSight 2D CAD that is exactly like AutoCAD but is completely free. Can open AutoCAD native file formats.
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Created by Dassault Systemes.
Operating System: Windows, Mac, Linux
nanoCAD A powerful free 2D CAD just like AutoCAD. They also have a paid version called nanoCAD Plus, but you will not miss any of those additional features while using the free version.
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Created by Nanosoft
Operating System: Windows
QCAD A free 2D CAD drafting program that is effective and easy to use.
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Created by RibbonSoft GmbH
Operating System: Windows, Mac, Linux
LibreCAD A free 2D CAD drafting program. It's a clone of QCAD but has taken a life of it's own.
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Created by Open Source
Operating System: Windows, Mac, Linux
Solid Edge Drafting A free 2D parametric CAD program. As a parametric program you would think changing a dimension should change the entity. Not so. You have to select the actual entity and not the dimension to change it. Here is a book to help you learn.
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Created by Siemens PLM Inc.
Operating System: Windows
T-Flex Student A 2D & 3D parametric CAD version of their commercial product, includes an FE solver and dynamics simulator. Files created by the student edition cannot be opened by any other software including their own commercial version. Expect other limitations to the features available. Commercial use is prohibited.
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Created by Top Systems Ltd..
Operating System: Windows
Solvespace A 3D CAD program that uses constraints and history to propagate design modifications. It can be used for assemblies. It's an astoundingly light program for what it does and is fun to use. But it can get stuck in long computation loops as the model progresses.
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Created by Jonathan Westhues
Operating System: Windows
FreeCAD It's a free open source 2D/3D CAD program that is a work in progress.
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Created by J Riegel, W Mayer, Y van Havre.
Operating System: Windows, Mac, Linux
PowerSHAPE-e Free 3D CAD designer using wireframe, surface, solid & triangle modeling. Files can only be saved in their propreitary format.
Created by Delcam Inc.
Operating System: Windows
X11 2D CAD but 3D features can also be created. As this is a free version of their commerical product, only one layer can be created for 2D modeling and the model size is limited to 200kB.
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Created by GrayTech Software, Inc.
Operating System: Windows
CadStd A simple 2D CAD program suitable for most drafting work.
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Created by John Apperson.
Operating System: Windows
JustCAD 2D CAD software.
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Created by Jon Hoke
Operating System: Windows
PythonCAD 2D CAD software.
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Created by Matteo
Operating System: Windows, Linux
VectorEngineer A compact & efficient 2D CAD software, some features have been disabled in the free version, but nothing you can't live without.
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Created by Duncan Aylwin
Operating System: Windows
A9CAD General purpose 2D CAD program.
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Created by A9 Tech Inc., Inc
Operating System: Windows
ProgeCAD Smart A 2D CAD program.
Created by ProgeCAD
Operating System: Windows
BRL CAD The U.S army has released a CAD system to open source, which is now being enhanced by the open source community.
Operating System: Windows, Mac, Linux, Solaris.
Draft IT Good 2D drafting program. Light version of their commerical product.
Created by CAD Logic
Operating System: Windows
Cap Free simple & smart 2D CAD program.
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Created by Michael Henderson
Operating System: All (Java)
DoubleCAD Free 2D CAD drafting program, just like AutoCAD LT.
Created by IMSISOFT
Operating System: Windows
   
Electrical CAD Systems
DesignSpark The best free PCB design software available. It allows you to generate all the files required to take your project from circuit diagram to layout schematic to a circuit board built project. Gerbers (Extended RS-274-X), Excellons, BOMs, component lists and positions are possible along with DXF (import and export) and IDF for interfacing to mechanical CAD software. Supports the importing of Eagle CAD design files, circuit diagrams and libraries.
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Created by RS Components Ltd
Operating System: Windows
FreePCB Free PCB design software. 1 to 16 copper layers. Board size up to 60 inches by 60 inches. Lots of options when generating CAM gerber files. You usually import a PADS netlist generated from a schematic capture program (TinyCad) then you can run connectivity checks to validate your layout against the schematic. Lots of layout design rule checks are also included. It even uses a free online auto-router.
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Created by Open Source
Operating System: Windows
Express PCB/SCH Free Circuit Board Design and Schematic Design Software.
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Created by Open Source
Created by Express PCB
Operating System: Windows
Eagle The EAGLE Layout Editor is an easy to use, yet powerful tool for designing printed circuit boards (PCBs). It can create CAM files for EXCELLON & GERBER. The limitations of the freeware version are as follows -
  • the useable board area is limited to 100 x 80 mm (4 x 3.2 inches).
  • only two signal layers can be used (Top and Bottom).
  • the schematic editor can only create one sheet.

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Created by CadSoft Computer GmbH.
Operating System: Windows, Mac, Linux

Electric The ElectricTM VLSI Design System is a complete Electronic Design Automation (EDA) system that can handle many forms of circuit design, including: Custom IC layout , Schematic Capture (digital and analog), Textual Languages such as VHDL and Verilog, Electro-mechanical hybrid layout, Programmable logic (FPGAs).
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Created by Static Free Software
Operating System: All (Java)
AutoTRAX AutoTRAX integrates tools that include schematic capture, simulation, layout with autoplacement, autorouting and 3D visualization. Light version of their commerical product so expect limitations on the number of pins, parts and PCB size.
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Created by Kovac Software
Operating System: Windows
CADSTAR PCB design software. Free version limited to 50 library components and 300 pins.
Created by Zuken.
Operating System: Windows
LASI LASI (LAyout System for Individuals) is a set of "general purpose" layout and design programs. It was not specifically designed for CMOS logic circuit layout, but most people use it for that purpose. LASI can draw schematics and can be used for most of the other graphical jobs of an IC project.
Created by Dr.D.E.Boyce.
Operating System: Windows
PCB123 Free schematic and layout software. Import Net lists from multiple CAD vendors, 145,000+ parts library, 2, 4, and 6 layer support, design rule check/design for manufacturing, copper pour with net connectivity.
Created by PCB123
Operating System: Windows
McCAD Collection of fully functioning electronic circuit design tools which are functional and can be used to create schematics, printed circuits, view Gerber documents, and run simulations. Free version has limitations on net, pin & board sizes.
Created by McCAD Inc
Operating System: Windows, Mac.
Rimu Schematic Electrical and electronic schematic capture software, free version limited to 100 pins.
Created by Hutson Systems
Operating System: Windows
TinyCAD Free open source software for drawing circuit diagrams, comes with a library of standard symbols.
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Created by Team
Operating System: Windows
Target3001 Free light version of their commerical PCB design product, this one does save to production file formats (Gerber etc).
Created by Distrelec PCB Services
Operating System: Windows
   
Ship CAD Systems
FreeShip Plus Free software to analyze the resistance and power for a ship and other hydrodynamic calculations for vessels and underwater vehicles.
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Created by HydroNShip
Sea Solution CAD software specific to ship building. While their latest software is not free, they have made their first version of the software freely available. Scroll to the bottom of their download page to find the free release.
Created by Sea Solution Inc
   
Architectural CAD Systems
DesignWorkshop Lite Build 3D models for home design, visualization of architecture, landscapes, exhibits, or any kind of spatial design with DesignWorkshop Lite, courtesy artifice Inc, you can also view and walk-through ready-made models created in 3DMF format, DXF, Design Workshop etc.
Created by Artifice Inc
Operating System: Windows, Mac
Sweet Home 3D Open source cad program that lets you use drag and drop to lay-out rooms, houses and apartments in 2d. 3d projections can be displayed. It also allows you to create photo-realistc PNG files and videos. It can import images from google sketch-up and 3DS files.
Created by Emmanuel Puybaret
Operating System: All (Java), Web browser
TigerCAD Free 2D general diagramming software which can be used for garden design, building & room plans as well as mechanical & electronic drawings. Very capable and simple simple to use, also creates pdf files of your drawings.
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Created by Peter Howard
Operating System: Windows
AllyCAD Free version of their commerical product, file size limited to a maximum 150kb. Can be used for both architectural & mechanical work.
Created by Knowledge Base Pty Ltd
Operating System: Windows
CYCAS Architectural software for drafting and design in 2D & 3D. Rendering is provided by the freeware POV-Ray engine. The freeware version of their commercial product is restricted to using just one layer, printing to only A4 size, there may also be additional limits to the features offered.
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Created by Verlag A.C.Frese
Operating System: Windows, Linux
KREOnet For laying out tiles & mosaics on floors & walls with texturing.
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Created by Iris Fabbrica Marmi e Graniti
Operating System: Windows
Octree The beta releases are free for now. It's a revolutionary idea in interface design that maximizes the screen space for drawing.
Created by FCA GmbH and GbR HNS
Operating System: Windows (some limitations on Windows), Unix
Envisioneer Express Simple creation of floor plans, 3D models, and interior design concepts, it uses real world objects such as walls, doors, windows and stairs. Very easy to learn.
Created by CadSoft Corp.
Operating System: Windows
Copan Lite Designed for land surveyors, processes and adjusts raw field survey data, computes and adjusts map traverse data, performs map or deed checks, calculates areas and perimeters, performs coordinate transformations.
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Created by Underhill Geomatics Ltd.
Operating System: Windows
Liberta
Scalinata
Liberata is a free timber roof and dormer design software. Scalinata is a free wooden staircase design software.
Created by Weto AG
Operating System: Windows
 
CAD Management Systems
iges2step Allows viewing IGES and STEP files and translating between them.
Operating System: Windows
Viewplot Viewplot allows you to inspect various CAD formats, take measurements and manipulate data.Create high resolution PDF documentation within the graphical user interface or in batch mode. Supported Input formats: Gerber(X), DXF, Drill, Hpgl.
Created by Roneda
Operating System: Windows
Bentley A CAD file viewing for DGN, DWG and DXF file formats.
Created by Bentley
Operating System: Windows
WorkXPlore Freeware to view DXF, DWG, STL, IGES, STEP, UNISURF.
Created by Sescoi USA Inc
Operating System: Windows
Solidworks Viewer eDrawings Viewer allows viewing of native AutoCAD\AE files (DWG and DXF) and native SolidWorks parts, assemblies, and drawings.
Created by Solidworks Inc.
Operating System: Windows
CAD Exchanger Freeware program to convert between the following formats ACIS SAT, IGES, STEP, STL, VRML and Open CASCADE BRep. Work is under-way to include X3D, Parasolid XT, and others.
Created by Roman Lygin
Operating System: Windows
 
Animation Software
Anim8or Free 3D modeling and character animation software. Create figures, sequences, scenes, materials & animations.
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Created by R. Steven Glanville
Operating System: Windows
Blender Open source 3D modelling software for animation & rendering.
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Operating System: Windows
Misfit Model 3D Linux users have to compile it from the sources..
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Operating System: Windows, Mac, Linux
Wings3D A free 3D subdivision modeler suited for artists.
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Created by Open Source Volunteers
Operating System: Windows, Mac, Linux
Art Of Illusion Open source 3D modelling software for animation & rendering.
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Operating System: Windows, Mac, Linux
 
TreePad X Enterprise
384 Gigabyte Personal Information Manager and Word Processor.
Intuitive and versatile, including Website Generator, spellchecker, thesaurus, attachments, search engine, recycle bin, and much more! For Windows and Linux/Wine.
Click here to get the free evaluation version.
 
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Last updated on November 09, 2014

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