 Ashlar Inc. - http://www.ashlar.com/ Graphite 2D drafting as well as Cobalt, Xenon, and Argon versions of the Vellum 3D modelling software |
 IronCAD - http://www.ironcad.com/ Solid modeling software for mechanical designers and engineers. |
 SolidWorks - http://www.solidworks.com/ A solid modeling program for mechanical engineers and designers, as well as add-on applications. |
 Intergraph SmartSketch - http://www.intergraph.com/imagine/ A 2D parametric drawing program for Windows, that works on AutoCAD and MicroStation files. |
 Autodesk Inventor - http://www.autodesk.com/inventor Solid modeling package for 3D mechanical design. |
 CoCreate - http://www.cocreate.com/ Provider of engineering collaboration software for product design, management, and development, CAD, PLM, mechanical engineering, and workflow management. |
 SteelCad - http://www.steelcad.com/ Steel detailing software with packages for structural design, detailing, and manufacturing. |
 freeCAD - http://www.askoh.com/ A basic CAD program for creating collections of 3D elements, which can be connected by joints, constraints, actuators, springs, dampers, or forces for running motion simulations. |
 SeaSolution - http://www.seasolution.com/ CAD/CAM tool for geometric simulation and design focused at ship building and shell plates development. |
 Zetaline Projects Limited - http://www.pipedata.com/ Presents the PipeData-Pro software family for piping designers and engineers [requires JavaScript and Flash]. |
 Pilot3D - http://www.pilot3d.com/ A relational trimmed NURB curve and surface 3D modeling program, useful for boat hulls and other applications. |
 SnapCAD - http://www.snapcad.com/ A mechanical design software package for TEMA type shell and tube heat axchangers and ASME pressure vessels. |
 Function Bay, Inc. - http://www.functionbay.com/ Virtual prototyping of complex mechanical systems with the RecurDyn software products. |
 MCS, Inc. - http://www.mcsaz.com/ Makers of the Anvil Express software for mechanical design, that also has manufacturing features. |
 Autopipe - http://www.autopipe.com/ Software that calculates piping code stresses, loads, and deflections under static and dynamic loading conditions, with special features for buried pipeline analysis, wave loading, and fluid transients. |
 Washington Softwares Ltd. - http://washingtonsoft.com/ Mechanical design software with 2-D drawing support for designing of centrifugal fans, pressure vessels (ASME and ISI standards), Gears, clutches, and couplings. |
 Engineering Software Solutions - http://www.ess.com.au/ Developers of engineering based design software for special requirements in industries such as petrochemical, ship building, mining, civil, mechanical, structual, manufacturing, defence and aerospace. |
 ProSpur+ - http://www.dsnell.zynet.co.uk/PS/ProSpur.html A program designed to create drawings of spur gears, as symbols for ProCAD+ on Acorn RISC computers. |
 Romax Technology - http://www.romaxtech.com/ Develops software for gear box design, dynamic simulation of gear shift synchronization, and related tasks. |
 Sigmetrix LLC - http://www.sigmetrix.com/ Develops and supports CE/TOL, a tolerance and variation analysis software package for mechanical design and manufacturing processes. |
 Ascon Group - http://www.ascon.ru/english/ Develops software for 3D Parametric Solid Modelling and 2D Drafting, with add-ons for motion simulation, photorendering, kinematic and dynamic analysis. |
 Think3 - http://www.think3.com/ Produces mechanical CAD software for conceptual design through engineering to manufacturing for products in many industries. |
 Solid ConceptMecaSoft - http://www.solid-concept.com/ Develops and sells SolidConcept, a parametric 3D solid modeling software for creating parts, assemblies and automatic 2D drawings. |
 Revware, inc. - http://www.revworks.com/ Feature-based reverse engineering software for SolidWorks. |
 Sheet Lightning - http://www.revcad.com/sheet5/ Specialized engineering 2D/3D CAD shareware for sheet metal design and unfolding for fabrication and manufacture. It handles cylinders, cones, square-to-round adapters, ovals, intersections and multi-intersections. |
 VariCAD - http://www.varicad.com/ 2D/3D mechanical engineering CAD System for Windows and Linux. |
 Alibre Inc - http://www.alibre.com/ Alibre Design is a low-cost parametric mechanical design application with CAD-neutral data sharing and online collaboration tools. |
 Autodesk Inventor Tutorials by Sean Dotson - http://www.sdotson.com/ Basic and advanced tutorials on the use and customization of Autodesk Inventor 3D CAD software, discussion forums and current CAD news. |
 SketchCalc - http://www.sketchcalc.com/ A software that allows to calculate the properties of arbitrary profile sections, imported from DXF. |
 Saga Software - http://simnet.is/sagasoftware/ TabletCAD is a computer program for designing medicinal tablet shapes, calculating tablet volume and surface area and producing tablet technical drawings. |
 CADables - http://www.turbocadables.com/ TurboCAD hatch patterns, color palettes, and related resources. |
 Enventive Engineering, Inc. - http://www.enventive.com/ Software for the combination of preliminary design, mechanism motion simulation, travel and effort studies, critical parameter identification and analysis, optimization, and tolerance analysis. |
 Cadsoft Solutions, Inc. - http://www.csi-concepts.com Developer of Concepts Unlimited, 2D 3D modeling tools for Mac and PC designers. Supports precise NURBS,analytices, rendering, animiation and drawing composition. |