--- title: CAD Assistant Reviews meta\_title: 'CAD Assistant Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter reviews by the users' company size, role or industry to find out how CAD Assistant works for a business like yours. aggregate\_rating: rating\_value: 4.3 review\_count: 2 scale: '5' date\_modified: '2026-07-31' parent\_category: name: CAD url: https://www.g2.com/categories/cad --- # CAD Assistant Reviews & Product Details OPEN CASCADE CAD Assistant is a viewer and converter for 3D CAD and mesh files, free for both personal and commercial use. CAD Assistant is based on open source libraries (Open CASCADE Technology, Qt, FreeType, FreeImage, etc.) and employs open formats for CAD and mesh data (STEP, IGES, BREP, DXF, SAT (ACIS), glTF, JT, PLY, STL, OBJ, 3DM). * * * Seller [Open Cascade](https://www.g2.com/sellers/open-cascade-fefe9c5e-5b14-4918-984d-2d827b6e055d) Discussions [CAD Assistant Community](https://www.g2.com/products/cad-assistant/discuss) Show More ## Top-Rated Alternatives [ ![Onshape](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Onshape") Onshape 4.7/5(725) ](https://www.g2.com/products/onshape/reviews) [ ![SOLIDWORKS](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "SOLIDWORKS") SOLIDWORKS 4.5/5(647) ](https://www.g2.com/products/solidworks/reviews) [ ![Autodesk Fusion](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Autodesk Fusion") Autodesk Fusion 4.5/5(520) ](https://www.g2.com/products/autodesk-fusion/reviews) [ View All Alternatives ](https://www.g2.com/products/cad-assistant/competitors/alternatives) ![Verified User in Online Media](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Online Media") IO Verified User in Online Media Mid-Market (51-1000 emp.) 4/10/2023 "Good free tool to viewing CAD and migrating." 4/5 What do you like best about CAD Assistant? OpenCascade is a great 3D CAD viewer with an engaging tool with user friendly interface. It is a free to use tool for individuals and could be used for commercial use too. Review collected by and hosted on G2.com. What do you dislike about CAD Assistant? The team had issues with opening some new formats to be used and for editting. Also some minor lagging. Otherwise it went on smooth without major problems for using the tool. Review collected by and hosted on G2.com. What problems is CAD Assistant solving and how is that benefiting you? It helped the team to work on large amounts of 3D data seamlessly and efficiently. The best part is that it was free to use and could also be downloaded on smartphones. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Sanyog L.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Sanyog L.") SL Sanyog L. M Small-Business (50 or fewer emp.) 6/29/2021 "CAD Assistant is hands down the best (Free) tool for CAD viewing and migration" 4.5/5 What do you like best about CAD Assistant? CAD assistant is a free CAD viewer and migrator utility made with the Opencascade kernel. Some of the unique features of this utility are : 1. You can convert STEP files to .obj files and then use them inside Blender or any other animation tool. So, this makes it very easy to take the CAD files and render them out using a separate package. 2. It lets you view CAD files, manufacturing dimensions, sectional views, orthographic views, wireframe, and mesh views. 3. It supports a variety of formats (both mesh data and CAD data). Some of them include .step, .iges, .obj, .xt etc. For the entire list, you can check its documentation. 4. It lets you measure the linear dimensions of the part. 5. Allows importing multiple bodies. 6. Can extend its capabilities according to the company's requirements if necessary. Review collected by and hosted on G2.com. What do you dislike about CAD Assistant? It would be easier if we could change the pivot point for the 3D viewport. That would make the viewer much easier to use. Also, I wish "CAD rays" (another Opencascade's fantastic tool) was integrated inside of this tool itself so that one could also render out images from a single tool. Also, the scripting feature available inside CAD rays is something that CAD Assistant would benefit from if it was made available. Review collected by and hosted on G2.com. Recommendations to others considering CAD Assistant: It's a free tool. So, there's nothing much to think about if you want to choose this tool. However, I'd say this tool is a perfect demonstration of what the Opencascade kernel is capable of doing. I've been trying to learn Opencascade for a while to create specific CAD tools according to mine and my company's requirements. Go and make use of this lightweight, easy-to-use tool. Take it everywhere you go on your USB drive. You never know when it will come in handy. Review collected by and hosted on G2.com. What problems is CAD Assistant solving and how is that benefiting you? I used to render SOLIDWORKS using Visualize only. But, that tool was limited compared to other tools like Blender. Though SOLIDWORKS lets you convert the CAD files to obj directly., I've found using CAD assistant for exporting my CAD files much more efficient. It's a very compact tool, and I can carry it anywhere on my USB drive. So, wherever I go, I can view and export CAD files without the hassle of starting up large software like SOLIDWORKS. Review collected by and hosted on G2.com. Show More 7/13/2021 Current UserValidated ReviewerIncentivizedSource: G2 invite ### There are not enough reviews of CAD Assistant for G2 to provide buying insight. Below are some alternatives with more reviews: [ 1 ![Onshape Logo](https://images.g2crowd.com/uploads/product/hd_favicon/64b9ed904ebc3f3bc714a720216f40d4/onshape.svg "Onshape Logo") Onshape 4.7 (725) Onshape is a modern CAD system that eliminates design gridlock and helps engineers do their best work. Onshape unites advanced modeling tools and design data management in a secure cloud workspace that has rapidly become the primary CAD system for thousands of companies worldwide. ](https://www.g2.com/products/onshape/reviews "Onshape")[ 2 ![SOLIDWORKS Logo](https://images.g2crowd.com/uploads/product/hd_favicon/87a0eaa40f8b9a14542c077a348a699d/solidworks.svg "SOLIDWORKS Logo") SOLIDWORKS 4.5 (647) SOLIDWORKS offers complete 3D software tools that let you create, simulate, publish, and manage your data. SOLIDWORKS products are easy to learn and use, and help you design products better. ](https://www.g2.com/products/solidworks/reviews "SOLIDWORKS")[ 3 ![Autodesk Fusion Logo](https://images.g2crowd.com/uploads/product/hd_favicon/28ab5b3990e257fc5851e9730734a9cc/autodesk-fusion.svg "Autodesk Fusion Logo") Autodesk Fusion 4.5 (520) Autodesk Fusion is a comprehensive cloud software platform that integrates various tools for 3D design, manufacturing, electronics, simulation, and generative design. It serves as a collaborative, cloud-enabled CAD (Computer-Aided Design), CAM (Computer-Aided Manufacturing), CAE (Computer-Aided Engineering), and PCB (Printed Circuit Board) software. ](https://www.g2.com/products/autodesk-fusion/reviews "Autodesk Fusion")[ 4 ![DraftSight Logo](https://images.g2crowd.com/uploads/product/hd_favicon/8c6a22ef0be41ae7f215cd03a0a6bd36/draftsight.svg "DraftSight Logo") DraftSight 4.2 (209) DraftSight lets professional CAD users, students and educators create, edit and view DWG files. DraftSight runs on Windows®, Mac® and Linux. ](https://www.g2.com/products/draftsight/reviews "DraftSight")[ 5 ![Autodesk DWG TrueView Logo](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_344b9dd03db879f652a1e20a9059c8b3/autodesk-dwg-trueview.jpeg "Autodesk DWG TrueView Logo") Autodesk DWG TrueView 4.4 (75) AutoCAD DWG Format Viewer ](https://www.g2.com/products/autodesk-dwg-trueview/reviews "Autodesk DWG TrueView")[ 6 ![Autodesk Viewer Logo](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_f81f745d46c20d5cb09257a968ee0f99/autodesk-viewer.png "Autodesk Viewer Logo") Autodesk Viewer 4.3 (62) Autodesk Viewer is a free, web-based application that enables users to view, measure, mark up, and share 2D and 3D design files directly from their browser, without the need for any software installation. Supporting over 80 file formats, including DWG, STEP, DWF, RVT, and Solidworks, it facilitates seamless collaboration among project stakeholders by providing easy access to design data from any device with an internet connection. Key Features and Functionality: - Multi-Format Support: Handles a wide range of file types, ensuring compatibility across various CAD environments. - Zero-Installation Access: Operates entirely within a web browser, eliminating the need for software downloads or installations. - Integrated Tools: Offers intuitive tools for measuring, marking up, and reviewing designs, enhancing communication and collaboration. - Autodesk Ecosystem Integration: Connects seamlessly with Autodesk Construction Cloud, BIM 360, and Fusion 360, enabling automatic file synchronization and version control. Primary Value and User Solutions: Autodesk Viewer addresses the need for efficient and accessible design collaboration by allowing users to interact with complex 2D and 3D models without specialized software. Its browser-based platform reduces IT overhead and deployment complexity, making it particularly valuable for external stakeholders, clients, and occasional users who require quick access to design files. By supporting a broad range of file formats and integrating with Autodesk's suite of tools, it streamlines review workflows and enhances project communication, ultimately leading to more efficient project execution and decision-making. ](https://www.g2.com/products/autodesk-viewer/reviews "Autodesk Viewer")[ 7 ![FreeCAD Logo](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_265cf74c973e56c18ac70575c1e876a1/freecad.png "FreeCAD Logo") FreeCAD 4.1 (62) FreeCAD is a parametric 3D modeler made primarily to design real-life objects of any size. ](https://www.g2.com/products/freecad/reviews "FreeCAD")[ 8 ![IrfanView Logo](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_4153530ecc3f76b6704c39f324ec6a4a/irfanview.png "IrfanView Logo") IrfanView 4.6 (51) IrfanView seeks to create unique, new and interesting features, unlike some other graphic viewers, whose whole "creativity" is based on feature cloning, stealing of ideas and whole dialogs from ACDSee and/or IrfanView! (for example: XnView has been stealing/cloning features and whole dialogs from IrfanView, for 10+ years). ](https://www.g2.com/products/irfanview/reviews "IrfanView")[ 9 ![CADMATIC eBrowser Logo](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_a0317dbebf364bfc00e1ecdae036852e/cadmatic-cadmatic-ebrowser.png "CADMATIC eBrowser Logo") CADMATIC eBrowser 4.4 (50) CADMATIC eBrowser makes project review a breeze. Walk through your 3D model, combine several models in one, or compare models with the powerful 3D viewer. You can check collisions, easily locate objects and check their details, take measurements, view laser-scanned point clouds, and leave notes (markups) on top of the 3D model. Use it with your VR interface to take project review to the next level. CADMATIC eBrowser file sizes are extremely small, only approx. 10MB per project! You can easily share your project 3D model via email or a messaging application like Microsoft Teams. Why wait, download CADMATIC eBrowser now to optimize your project review and communication. CADMATIC eBrowser – key features: - Stand-alone browser with support for multiple file formats: EBM, EBMX (native Cadmatic formats), DWG, DFX, IFC, DGN, NWD - Possibility to merge and compare 3D models, including metadata and clash check, from different formats and sources and subset parts of models - The collision detector inside eBrowser enables users to gain more in-depth insight into the 3D model, combine 3D models from different sources, and check consistency between disciplines. - Option to upload point clouds with photorealistic panoramic views to compare design models with existing structures - Efficient and straightforward navigation using 3D or model hierarchy, check all meta-data about any object with one click - Control visibility, transparency, and color of objects - Use markups for change management and discussions with other project partners - Support for VR interface “There is no other 3D communication tool more capable than CADMATIC eBrowser.” – Cor Lettenga, DEKC Managing Director ](https://www.g2.com/products/cadmatic-cadmatic-ebrowser/reviews "CADMATIC eBrowser")[ 10 ![ActCAD BIM Logo](https://images.g2crowd.com/uploads/product/hd_favicon/aad1414e294c3e4fcd4c0789d980b65e/actcad-actcad-bim.svg "ActCAD BIM Logo") ActCAD BIM 4.5 (50) ActCAD has been consistently providing CAD Solutions for years and is the leading Indian CAD Software trusted by over 1 Million happy users worldwide. A power-packed genuine CAD Software available to you at a reasonable price. ](https://www.g2.com/products/actcad-actcad-bim/reviews "ActCAD BIM") [Show More](#) ## Questions about CAD Assistant? Ask real users or explore answers from the community Get practical answers, real workflows, and honest pros and cons from the G2 community or share your insights. [ Ask about CAD Assistant ](https://www.g2.com/products/cad-assistant/discussions/new) GU Guest User What is CAD Assistant used for? 0 Upvotes 0 [ Join the conversation ](https://www.g2.com/discussions/what-is-cad-assistant-used-for) [ View all Discussions ](https://www.g2.com/products/cad-assistant/discuss) ##### Pricing Pricing details for this product isn’t currently available. Visit the vendor’s website to learn more. [ View More Pricing Information ](https://www.g2.com/products/cad-assistant/pricing) ## Work at Open Cascade? Claim this profile to respond to reviews, update product info, and reach in-market buyers. 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