List of the Top 6 CAD Viewers for Linux in 2025

FreeCAD is a powerful, open-source parametric 3D modeling application designed for the creation of real-world objects in different sizes. The parametric modeling capability allows users to easily track the history of their designs and make adjustments to various parameters, thus streamlining the modification process. Users can create constrained 2D sketches that form the basis for building additional objects, enhancing the design workflow. The software includes a variety of tools for modifying dimensions and extracting detailed specifications from 3D models, which contributes to the generation of precise, production-ready drawings. As a cross-platform solution that works on Windows, Mac, and Linux, FreeCAD provides robust customization and extensibility features. It supports numerous open file formats such as STEP, IGES, STL, SVG, DXF, OBJ, IFC, and DAE, facilitating seamless integration into diverse projects. Tailored for different applications, including product design, mechanical engineering, and architecture, FreeCAD appeals to a wide range of users. Whether you are a casual hobbyist, a seasoned CAD expert, a student, or a teacher, FreeCAD's intuitive interface ensures that everyone can utilize its capabilities effectively. The software thrives on community-driven development, continuously improving through user feedback and contributions, which helps it meet the evolving needs of its extensive user base. This commitment to ongoing enhancement makes FreeCAD not only a tool but also a collaborative platform for innovation in design.

K-Display® View software streamlines the dissemination of design information across your organization. It accommodates numerous programs and applications capable of reading, navigating, and measuring all major CAD file formats on various devices. With K-Display View at your fingertips, you can trust that you are well-prepared for any CAD files you encounter. There’s no requirement for additional CAD software, as K-Display boasts an intuitive interface that allows teams in manufacturing, sales, support, and service to easily view and analyze files. You can rest assured that K-Display View operates as a locally installed, read-only application, preventing unintentional alterations to files or the online sharing of sensitive customer data. Leveraging Kubotek’s innovative Kosmos technology, K-Display offers full multi-threaded processing for quick access, even with larger files. Additionally, K-Display View is accessible in both desktop and mobile-friendly formats, functioning seamlessly across various operating systems such as Windows, Mac, Linux, Android, and iOS, which enhances its adaptability for all your CAD viewing requirements. This flexibility allows your team to collaborate efficiently, ensuring that everyone can participate regardless of their device or platform, ultimately enhancing productivity and communication within your organization.

CAD Exchanger is a solution designed for facilitating data interchange in the diverse multi-CAD landscape. APPLICATION FOR USERS • CAD Exchanger Lab. A desktop application for viewing, analyzing, and converting 3D data. SDKs & TOOLS FOR DEVELOPERS • CAD Exchanger SDK. Libraries available in C++, C#, Java, and Python for both applications and SaaS solutions. • CAD Exchanger Batch. A lightweight command-line utility for performing batch conversions in corporate or cloud settings. Our products cater to a wide range of clients, from innovative startups to Fortune 100 enterprises, enabling them to view, convert, and collaboratively work with 3D CAD data. • Over 250,000 users of CAD Exchanger Lab • More than 1 million users benefiting from CAD Exchanger SDK • Active in over 110 countries worldwide This wide adoption highlights the versatility and effectiveness of our solutions in the CAD data management space.

ABViewer is a multifunctional software designed for personal computers that simplifies the management of drawings. It empowers users to view, edit, convert, measure, and print an array of CAD files, such as DWG formats, alongside 3D models and raster images. Users can opt to focus on a particular drawing section or handle numerous files at once, all while enjoying a budget-friendly price. The application supports both individual and bulk file conversions, providing a wide range of export choices, including black-and-white output and customizable file dimensions. The 3D section panel is equipped with features that allow for adjustments to the visual representation of 3D models and section planes, which can be accessed in the 3D Viewer mode. Furthermore, users can tailor their 3D model viewing experience using various commands and features found within the 3D Section panel. The interface's settings at the top make it easy to show different model components, enabling users to create multiple planes simultaneously. In addition, ABViewer significantly boosts productivity by simplifying the handling of intricate drawing projects while ensuring that users have all the necessary tools at their fingertips. With its user-friendly design and robust functionality, it stands out as a valuable asset for professionals in the field.

Open CascadeCAD Assistant serves as an offline 3D CAD viewer and converter, featuring a user-friendly interface that is available for free for both personal and commercial purposes. Initially designed to demonstrate the capabilities of Open CASCADE Technology on mobile devices, it has garnered a substantial user base across desktops and mobile platforms globally, proving to be a quick and efficient 3D visualization tool. This application empowers engineers working with 3D data by leveraging open technologies, maximizing accessibility and functionality. Built on open-source libraries such as Open CASCADE Technology, Qt, FreeType, and FreeImage, it supports a wide array of open formats for CAD and mesh data, including STEP, IFC, IGES, BREP, glTF, JT, PLY, STL, OBJ, and 3DM. In addition to these capabilities, it can handle various other file types like DXF and SAT (ACIS), as well as XT (Parasolid). Moreover, CAD Assistant provides additional features that allow users to view mesh models along with their corresponding data, making it versatile for different use cases. With the ability to import and display files in PLY format, users can easily visualize mesh structures.

VariCAD stands out as a versatile CAD software designed for both 3D and 2D applications, catering specifically to the needs of mechanical engineering professionals. This robust tool enables designers to swiftly create, assess, and refine their models, all bundled in a comprehensive package that includes every necessary feature. With its exceptional balance of performance and affordability, VariCAD is considered one of the top choices available today. The software is not only compact and user-friendly, but it also encompasses all essential tools required for mechanical design. Key components of VariCAD feature: - 3D modeling capabilities - 2D drawing and editing functions - Optional parameter support - Optional geometrical constraint support - Modeling for shells, pipelines, and wires - Interference detection for crash analysis - 3D assemblies and grouping functionalities - Surface development tools for sheet metal unbending - Extensive symbol libraries and mechanical part catalogs - Calculative tools for 3D objects and 2D sections - Bill of Materials (BOM) generation and title block creation This makes VariCAD not only a practical choice but also a comprehensive solution for engineers looking to enhance their design processes.