Best Free Engineering Software of 2025

Interfacing Enterprise Process Center (EPC)

Interfacing Technologies

Interfacing’s Digital Twin Organization software provides transparency and Governance to improve Quality, Efficiency, and ensure Regulatory Compliance. Map, analyze, and automate processes, manage regulatory compliance, assess risks within a single platform! Interfacing’s digital twin solution (Enterprise Process Center - EPC) is an enterprise management system that helps companies digitalize processes to streamline operations, increase productivity, and continuously improve. Interfacing’s digital business platform – Rapid Application Development (RAD) Tools, with its Low-Code Development methodology will optimize usage of your technical resources and maximize transparency for ongoing improvement. Discover how our Low-Code Rapid Application Development module provides all the tools to create and deploy Custom, Scalable, Secure, and Mobile ready Applications in Days vs. Months!

56 Ratings

Starting Price: $10/month/user

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Innoslate

SPEC Innovations

SPEC Innovations’ flagship model-based systems engineering solution can help your team reduce time-to-market, cost, and risk on even some of the most complex systems. This cloud or on-premise application uses a modern web browser, with an intuitive graphical user interface. Innoslate’s full lifecycle capabilities include: • Requirements Management • Documents Management • Modeling • Discrete Event Simulator • Monte Carlo Simulator • DoDAF Models and Views • Database Management • Test Management with full reports, status updates, results, and more. • Real Time Collaboration

84 Ratings

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The Asset Guardian EAM (TAG)

Verosoft Design Inc

Meet The Asset Guardian (TAG) Mobi – Tackle Downtime Now TAG Mobi is the solution for preventive maintenance and asset management (EAM) within Microsoft Dynamics 365 Business Central. It helps manufacturing teams reduce risk and minimize downtime by offering dependable, integrated asset management tools. • Asset Lifecycle Management: Maximize asset performance and extend operational life • Preventive & Predictive Maintenance: Prevent costly failures and reduce unplanned downtime • Work Order Management: Easily dispatch, track, and complete maintenance tasks • Advanced Analytics & Reporting: Monitor KPIs with intuitive dashboards and real-time data • IoT & Real-Time Monitoring: Get proactive insights and alerts before issues impact operations With AI-driven features and user-friendly dashboards, TAG Mobi boosts asset performance, prevents unexpected breakdowns, and speeds up both onboarding and training.

21 Ratings

Starting Price: Free (2 power users)

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AvPro Software

Decision Software Systems

AvPro Software is comprehensive and easy-to-use. It's perfect for Aircraft MRO, Certified Repair Station (CRS), Aircraft Operators, and parts brokers. You can track Aircraft Parts I(nventory, Work Orders, and much more. Modular in nature and specifically designed for aircraft maintenance professionals and all types of repair stations. Key modules include barcoded inventory, component maintenance/inspection/SB/AD tracking, parts sales and flexible customer invoicing, work orders, and full GAAP accounting. AvPro allows for custom forms to match your forms manual and also features popular FAA/EASA forms (8130/377, etc.).

16 Ratings

Starting Price: $89/month/user

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CADhobby

CAD-MANUFACTURING SOLUTIONS INC.

CADhobby Student - free version for Academic use only. CADhobby IntelliCAD is a powerful and affordable computer-aided design (CAD) software application that is perfect for both hobbyists and professionals. It offers a wide range of features, including 2D and 3D modeling, rendering, and animation. CADhobby IntelliCAD is also compatible with a variety of file formats, including DWG, DXF, DGN, and STL. CADhobby IntelliCAD is a great choice for anyone who wants to create high-quality CAD designs without breaking the bank. It is easy to learn and use, and it has a large and active community of users who can provide support and help.

44 Ratings

Starting Price: $0.00/one-time/user

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PlantFCE Model Builder

Storm Consulting

Customize models, refine designs, and export with precision. PlantFCE Model Builder offers intuitive 3D modeling for process plants. Model Builder is useful when estimating costs for an engineering project. View real-time updates in the rendering window as you edit the scene. Low lock-in with PlantFCE Model Builder* Model Builder allows you to import and export 3D models from and to industry-standard 3D model formats like GLB, OBJ, and STL. With an automatic clash check, reduce errors and save time.** PlantFCE Model Builder's automatic clash check** reduces time spent on clash check sessions and gives you more time to work on your project. Download for Windows and Mac on the PlantFCE website. *Exporting through Model Builder does not include Model Builder specific functionality like properties set on objects or features specific to Model Builder. **Clash check will be released in version 2.

Starting Price: $49/month/user

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FactoryTalk Optix

Rockwell Automation

FactoryTalk® Optix™ is a new visualization platform that accelerates value delivery with modern technologies, innovative designs and scalable deployment options. FactoryTalk Optix can help improve your process, efficiency and deliverables – in one easy to access tool. Take advantage of new levels of collaboration, scalability and interoperability to achieve your HMI vision. New SaaS-enabled workflows will enable your team to collaborate any time, from anywhere, thanks to built-in change tracking and versioning that automatically keeps track of who did what and when. Harness the cloud and become more agile by deploying quickly and scaling based on demand. Use the increased efficiency to beat competitors to market, get to profit faster and improve return on investment. Transform the way you collaborate! The cloud makes it easier for suppliers, employees and customers to collaborate from anywhere in the world.

Starting Price: $650

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WEBICC

AEG COMMISSIONING

Discover the WEBICC SCADA solution for the management and automation of industrial processes, perfectly adapted for the digital age. With a 100% web and multi-platform interface, WEBICC SCADA fits the needs of projects of any size, from the most compact to the most ambitious. Create complex and customized visualizations easily using SVG graphical symbol screens, data logs, alarms, maintenance notifications, emails, real-time and historical graphs, plus detailed reports. Our applications run smoothly in any modern HTML5 compatible browser, be it a touch panel PC, computer, tablet or smartphone. Our server runs on Windows, Linux operating systems and ARM architectures such as Raspberry Pi. The client application requires no installation, requiring only a free web browser. Transform the way you interact with industrial systems with WEBICC SCADA – superlative efficiency, flexibility and control.

Starting Price: €403.9

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CAD6starter

Malz++Kassner GmbH

CAD6starter is the free entry to the CAD6 series and contains basic drawing and labeling functions. It can open, edit, save, and print all drawings created by any CAD6 edition. Use CAD6starter to create elaborate technical drawings with the highest accuracy and all important structural elements such as layers, pens, pages, groups, and blocks. For simple scaled drawing, you can work in the model space at a scale of 1:1 and then generate different scales using mappings. A drawing can contain multiple pages. Hatchings and dimensions automatically adapt to changes in the drawing. CAD6starter may be used free of charge and unconditionally for private use, educational purposes, as well as commercial use. All programs of the CAD6 series are 100% data-compatible.

Starting Price: 0 EUR

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PloViewMini

Isoplotec Corporation

PloViewMini is a freeware (license fee free) viewer for viewing HP-GL file drawings, and has the following features: (1) High-speed display of vector drawings and many display-related commands (2) Line color, width change, black and white/color switching of the entire drawing, background color switching, pen ON/OFF (3) Rotation, mirror, grid display (4) Character font (TrueType) font switching, character size change (5) Coordinate display (6) Multi-page support (7) Input file format is HP-GL (not compatible with HP-GL/2 or HP RTL) PloViewMini is a limited-function version of the paid version of PloView.

Starting Price: 0.00 US$ / license

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Momentum IoT

Momentum makes service businesses more profitable. Our cloud-based software platform, powered by a connected network of GPS hardware devices, gives you complete financial control and deep operational insight into your business. With Momentum, you never worry about time-consuming data entry or human error. Data collection is always accurate and automatic. That's why Momentum excels where other software fails. Drive more revenue and profit. All you have to do is get connected, Momentum will do the rest. The Connected Network of Momentum Devices: Vehicles, Equipment & Crews - The Eagle One: One GPS device for vehicles, trailers and heavy equipment. It's available with an OBD-II harness or 12V battery harness. - The Momentum Toolie: Bluetooth enabled location and activity tracker for light equipment and tools. - The CrewID: Privacy-first labor cost tracker that automatically captures and calculates all labor costs from the field without data entry.

57 Ratings

Starting Price: $20 per device per month,

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BigTime

BigTime Software

BigTime is a top-rated online time and billing software for professional service firms. With BigTime, firms can take advantage of time and expense tracking tools, WIP management, billing and invoicing, task and workflow management tools, and more, in a single platform. Cloud-based with an intuitive interface, BigTime bundles industry best practices and operational know-how in a user-friendly application that runs on all desktop and mobile devices. From project creation to client payments, BigTime streamlines firm operations with intuitive budgeting, project management, and invoicing solutions that can be configured to automate even the most complex scenarios. BigTime also integrates with leading productivity apps such as QuickBooks, Lacerte, Slack, Salesforce, and Zapier.

24 Ratings

Starting Price: $10.00/month/user

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Coohom

Coohom is a leading global cloud-based, 3D design platform that provides all-in-one software and services to empower designers and businesses to design a professional project in minutes, and get photo-realistic 3D visualizations in seconds. With a presence spanning the United States, China, Korea, Thailand, Vietnam and Indonesia, Coohom's innovative solutions have garnered the trust of over 10 million customers from 200 countries. With the aim of facilitating the digital transformation of customers in the interior design, furniture & home decor, and Kitchen & Bath industry, Coohom provides a comprehensive suit of software encompassing design, rendering, marketing, production, and construction, helping to streamline their workflows and achieve success.

20 Ratings

Starting Price: $0 per month

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Sweet Home 3D

eTeks

Sweet Home 3D is a free interior design application that helps you draw the plan of your house, arrange furniture on it and visit the results in 3D. Insert doors and windows in walls by dragging them in the plan, and let Sweet Home 3D compute their holes in walls. Add furniture to the plan from a searchable and extensible catalog organized by categories such as kitchen, living room, bedroom, bathroom. Change color, texture, size, thickness, location and orientation of furniture, walls, floors and ceilings. While designing the home in 2D, simultaneously view it in 3D from an aerial point of view, or navigate into it from a virtual visitor point of view. Create photorealistic images and videos with the ability to customize lights and control sunlight effect according to the time of day and geographic location. Extend the features of Sweet Home 3D with plug-ins programmed in Java, or by developing a derived version based on its Model View Controller architecture.

5 Ratings

Starting Price: Free

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Blender

Blender Foundation

Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, video editing and 2D animation pipeline. Cycles is Blender’s built-in powerful unbiased path-tracer engine that offers stunning ultra-realistic rendering. Blender’s comprehensive array of modeling tools make creating, transforming and editing your models a breeze. VFX professionals say: “Probably the best tracker in the market”. Blender includes production ready camera and object tracking. Allowing you to import raw footage, track the footage, mask areas and see the camera movements live in your 3D scene. Eliminating the need to switch between programs. Thanks to the high quality rigging and animation tools, Blender is being used for numerous short films, advertisements, TV series and feature films now.

8 Ratings

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EdrawMax

Wondershare

Creating flow chart, mind map, org charts, network diagrams and floor plans with rich gallery of examples and templates. Edraw Max is an extremely powerful all-in-one diagramming tool that can serve all of your purposes. Whether you need to draw flowcharts, fishbone diagrams, UML diagrams or design floor plans, office layouts, you can find what you want in Edraw Max. Importantly, it is quite affordable. Templates let you go fast. Get inspired and start your design quickly by choosing from thousands of our professionally designed templates. Excellent file compatibility allows you to import Visio files or export your drawings to a variety of familiar file formats, such as Visio, PDF, Word, PPT, JPEG, Html, etc. Edraw Max allows you to create more than 280 sorts of diagrams effortlessly, from the technical diagrams to the attractive infographics, which leaves Visio far behind.

5 Ratings

Starting Price: $99 per user per year

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AstroPrint

Keep your 3D models stored neatly in the cloud so you can access them anywhere. Simply upload your own .stl files for cloud based slicing or upload pre-sliced .gcode files. Add and edit your designs with our online STL viewer and print wirelessly through a beautifully simple, intuitive interface. Slice with confidence with manufacturer suggested settings. Everything is accessible from your browser so there is no software to install or keep up to date. Using the AstroPrint mobile app, you can print by enabling WIFI 3D Printer so you can print from any device, remotely controling your 3D printer, and even get push notifications when your prints are finished. Neat! View real-time progress of your prints. Add a camera to stream live video, take snapshots, and timelapses. Whether you are with a 3D Print Farm Business, a major University with 100+ printers, or an Enterprise like Stanley Black and Decker, we have you covered.

2 Ratings

Starting Price: $9.90 per month

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IrfanView

IrfanView is a fast, compact and innovative FREEWARE (for non-commercial use) graphic viewer for Windows XP, Vista, 7, 8 and 10. It is designed to be simple for beginners and powerful for professionals. 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! IrfanView was the first Windows graphic viewer worldwide with Multiple (animated) GIF support. One of the first graphic viewers worldwide with Multipage TIF support. The first graphic viewer worldwide with Multiple ICO support. Lossless JPG rotation, crop and EXIF date change (also in batch mode). Slideshow (save slideshow as EXE/SCR or burn it to CD). Batch conversion (with advanced image processing of all files). Support for embedded color profiles in JPG/TIF files. No registry changes without user action/permission!

2 Ratings

Starting Price: $12

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Thangs Sync

Thangs

Thangs Sync is a desktop application, that when mapped to a folder will back up 3D assets to the Thangs free, unlimited, and secure, 3D-native cloud. Thangs + Sync supports more than 30 3D file formats. When a new model or 3D file is saved to the synced folder, the file is securely saved in the user's Thangs Workspace and 3D-native cloud. When a newer version is saved to the folder, overriding the prior version, the new version is synced to Thangs Workspace. All models and all versions are securely backed up in Workspace where there is a 3D-native viewer, visual revision control, and non-linear collaborative workflow tools.

2 Ratings

Starting Price: $0

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Coreflux

Coreflux: A next-gen IoT platform emphasizing seamless integration, scalability, and security. At its core: MQTT Broker: The platform's backbone, facilitating real-time data management and communication between diverse devices, irrespective of protocols or manufacturers. Flux DSL: A proprietary domain-specific language enabling users to craft event-driven workflows, orchestrating sophisticated IoT scenarios. Asset Management (Flux Assets): Manages a wide array of IoT assets, from sensors to databases, ensuring optimal configuration and performance. Orchestration: Coreflux's built-in tools ensure precise orchestration of devices and workflows, optimizing operations and automations. Designed for IoT enthusiasts, developers, and enterprises, Coreflux adapts to varied needs, from managing a few devices to networks in the thousands.

2 Ratings

Starting Price: €0

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D5 Render

Import models, and enjoy an instant sense of reality throughout the creation process. Outdated rendering tricks are now replaced by common sense. With a gentle learning curve and effortless reach for assets, with D5, it's never been easier or more intuitive to visualize a story. Slow 3D rendering has always been the bottleneck that slowed your workflow. You made an adjustment and then waited for the progress bar to drain your inspiration. Bursts of creativity had to be squeezed into the spaces between renderings. But now, You have D5. With each burst of inspiration, D5 keeps up with every thought and modification to keep you immersed in a seamless workflow. You can fully dive yourself into the creative moment, sculpting with light and truly playing in the worlds you create. D5 GI with Smoothness experience brings you real-time interactivity and near offline rendering quality. No need to compromise, you have the world at your fingertips.

1 Rating

Starting Price: $38 per month

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g-Viewer

Geomage

Geomage g-Viewer allows visualization and QC of different geophysical and seismic data. g-Viewer allows: - Load and QC Seg-Y files of any size - Load multiple Seg-Y files – 2D and 3D - Selection of active dataset from location map - Graphical representation of trace header(s) above seismogram view - Cross-plot any 3 trace headers (horizontal-vertical-color ) - Load of geometry from trace headers - Editing trace header scheme per each dataset - Selection and representation of CS/CR/CMP gathers picked from location map - Selection and representation of active trace from seismogram/location map - Editing text and bin headers - Auto-update feature allows to get new version whenever its available.

1 Rating

Starting Price: $300/year/user

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AiHouse

Discover the game-changing potential of our cloud-based, AI-infused 3D design software. From crafting 2D/3D floor plans to automating home furnishing, and effortlessly managing your entire project. You'll have access to a vast library of over 80 million 3D models and templates, along with a robust rendering engine. Elevate your presentations with breathtaking visuals, and simplify your workflow by generating CAD drawings, material lists and quotations in a single click.

1 Rating

Starting Price: $0/month

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nanoCAD

Nanosoft

nanoCAD is a modern computer-aided design (CAD) platform that provides designers with powerful capabilities in 2D drafting and 3D modeling. nanoCAD can be used on its own as a cost-effective DWG-editor, or customized with essential modules: Construction, Mechanica, Raster, Topoplan and 3D Solid Modeling. 2D drawings and 3D solid models with 2D and 3D parametric constraints, and dynamic UCS for effortless sketching on 3D faces. Documentation drawings link to 3D models. Fully DWG compatible.

1 Rating

Starting Price: $180.00/year/user

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AnyLogic

The AnyLogic Company

AnyLogic is the standard in multimethod modeling technology, delivering increased efficiency and less risk when tackling complex business challenges. The unmatched flexibility found in AnyLogic allows users to capture the complexity of virtually any system, at any level of detail, and gain a deeper insight into the interdependent processes inside and around an organization. AnyLogic has a GSA Contract schedule #47QTCA18D007Q. Government agencies of the USA may purchase through GSA Advantage.

1 Rating

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Solid Edge

Siemens

Solid Edge is a portfolio of affordable, easy to deploy, maintain, and use software tools that advance all aspects of the product development process – mechanical and electrical design, simulation, manufacturing, technical documentation, data management, and cloud-based collaboration. Developed on Siemens industry leading technologies, Solid Edge provides the most innovative and comprehensive approach to product development for the mainstream market.

1 Rating

Starting Price: $75/month/user

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EasyEDA

More than 1 million real-time updated components have been created, letting you focus on the design, and you can create or import your own common libraries. Benefit from China’s leading electronic components distributor - LCSC , EasyEDA supports direct links to more than 200,000 real-time, in-stock components at LCSC . Designers can refer to stocks, prices, and order at any time during design. It has the same features as the online version, and has more design areas, we have made a lot of improvements, recommended. Easy to use. If you have used other PCB tools then you can use it even more quickly. Light weight, less resource hungry, smoother experience, speed up your design. No activation, just register and login to use, no licensing required. Local backup automatically with document recovery at any time. Your files will also be saved on the cloud server, giving you double backup for you data security.

1 Rating

Starting Price: $4.9 per month

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PCB123

Sunstone Circuits

PCB123 is a full-feature design tool for Printed Circuit Board designers of all levels. Introduced as a free tool in 2002, PCB123 still operates on a risk-sharing business model: We don't get paid until you succeed at designing your PCB. And to help ensure your success, we staff our technical support department with professionals that can answer your questions. So what's to stop you? Easy-to-use, and professional-grade PCB CAD software that's free and fully supported. We don’t throttle our tool and charge you for a license to give you full functionality. We get paid when you order boards – it really is that simple. software developer’s kit, with programmatic access to the PCB123 database, you can expand the tool for your own purposes. Our PCB layout specialists are available to help you stretch your resource dollars & speed your PCB prototyping cycle. Submit basic design information to get a quote.

1 Rating

Starting Price: $0

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OpenPLC Editor

OpenPLC

The OpenPLC Editor is an IEC 61131-3 compliant PLC editor totally free and open source. You can use it to upload PLC code directly to any board or system running OpenPLC Runtime. OpenPLC is an open-source programmable logic controller that is based on easy-to-use software. It is the first fully functional standardized open-source PLC, both in software and hardware. The OpenPLC project was created in accordance with the IEC 61131-3 standard, which defines the basic software architecture and programming languages for PLCs. OpenPLC is mainly used in industrial and home automation, the internet of things, and SCADA research. The Runtime is a portable software designed to run from the smallest of all microcontrollers (Arduino-compatible) to powerful servers in the cloud. It is responsible for executing the PLC programs you create using the Editor. The OpenPLC Editor is the software that runs on your computer and, as mentioned, is used to create your PLC programs.

1 Rating

Starting Price: Free

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Plasticity

With a workflow optimized for creativity, unparalleled fillets, sophisticated surface modeling, and the most advanced direct editing tools, Plasticity is the perfect choice for those who demand the best. Plus, with no subscriptions, you own your software. Try it free for 30 days and see the difference for yourself. Plasticity is the ultimate tool for creative professionals in the video game industry, product design, vehicle design, and beyond. Say goodbye to clunky CAD workflows designed for manufacturability. Plasticity offers all the power of NURBS modeling combined with the best workflow innovations from modern polygonal modeling software. This unique combination gives you the flexibility and creativity you need to bring your ideas to life. Plasticity's advanced geometry and fillet engine are second to none, thanks to Parasolid's best-in-class algorithms. With Plasticity, you can create the absolute best fillets, booleans, and offsets, and change them whenever you want.

1 Rating

Starting Price: $149 per month

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Best Free Engineering Software

Compare the Top Free Engineering Software as of October 2025

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