1. [Home](https://www.g2.com/) 2. ... 3. [CAD Viewers](https://www.g2.com/categories/cad-viewers) 4. [CAD Assistant Discussions](https://www.g2.com/products/cad-assistant/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_0fdc0a5bfdc5761be1bd24958ccbb5e4/cad-assistant.jpg "Product Avatar Image") ](/products/cad-assistant/reviews) [ CAD Assistant ](/products/cad-assistant/reviews) (2)4.3/5 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). Show More * * * ### 50.0 Nps Score Already have CAD Assistant? ### All CAD Assistant Discussions Search Most CommentedMost HelpfulCommon QuestionsNewest All DiscussionsDiscussions with CommentsCommon QuestionsDiscussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Common Questions Newest Filter by All Discussions Discussions with Comments Common Questions Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • about 3 years ago More Options - [ # What is CAD Assistant used for? ](/discussions/what-is-cad-assistant-used-for) What is CAD Assistant used for? [ CAD Viewers ](https://www.g2.com/tags/cad-viewers) * * * (true)\<0\>0\>Upvotes (false) * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+CAD+Assistant+questions+and+get+answers+from+expert+users+in+our+CAD+Assistant+Discussions+section.&title=CAD+Assistant+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fcad-assistant%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=CAD+Assistant+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fcad-assistant%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fcad-assistant%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=CAD+Assistant+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fcad-assistant%2Fdiscuss%0aAsk+CAD+Assistant+questions+and+get+answers+from+expert+users+in+our+CAD+Assistant+Discussions+section.) [![mail](/assets/social-logos/mail-d55c53b04bf49872e40cd2443b85a99caa23394e6cf154ae32a9d08377c15d86.svg "mail")](mailto:?subject=CAD+Assistant+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fcad-assistant%2Fdiscuss%0aAsk+CAD+Assistant+questions+and+get+answers+from+expert+users+in+our+CAD+Assistant+Discussions+section.) ![copy_link](/assets/social-logos/copy_link-05d8dc5dc8576fc78425ad34d07241b060878835e555a30417ff41c18335e575.svg "copy\_link") ## Start a New Software Discussion Have a software question? Get answers from real users and experts [Start A Discussion](/products/cad-assistant/discussions/new) * * * ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/thumb_square/thumb_square_0fdc0a5bfdc5761be1bd24958ccbb5e4/cad-assistant.jpg "Product Avatar Image") ### Have you used CAD Assistant before? Answer a few questions to help the CAD Assistant community [ Yes ](javascript:void(0))[ Yes ](https://www.g2.com/login?context=product_review&return_to=https%3A%2F%2Fwww.g2.com%2Fproducts%2Fcad-assistant%2Fdiscuss%3Fsmall_ask%3Dcad-assistant) No