Best Free Engineering Software - Page 3
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Compare the Top Free Engineering Software as of December 2025 - Page 3
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1
ExtendSim
Imagine That
ExtendSim consists of a full range of tools for any type of simulation. No matter how you want to use ExtendSim, building models, running models, analysis, etc., there is a package that will fit your needs. There are ExtendSim products for building, experimenting with, and analyzing models, Model Developer Editions, and more specialized packages designed strictly for running models, analyzing models, or for use as a learning tool. Figure out which package might work best for you based on how you intend to use ExtendSim by visiting User Types. Create, use, and interactively run models, build custom interfaces and components, exchange data with and be controlled by other applications. Each Model Developer Edition (MDE) of ExtendSim has the same core set of capabilities. In them you can create and build models and interfaces, change values and settings, run simulations and animations, perform experiments, do analysis and optimization, save and export results. -
2
Cupix
Cupix
Cupix is the trusted partner of choice for delivering the industry’s most flexible and easiest-to-deploy 3D digital twin platform to builders and owners everywhere. Capture your Jobsite in 3D with our simple-to-use mobile app while controlling a 360 camera. Then collaborate by sharing a variety of information related to the built-world lifecycle. All through a single platform. The industry's most advanced 3D digital twin platform is based on data captured from any source, anywhere, any time. Import any form of point cloud data into our unified 3D digital twin platform, including terrestrial and hand-held LiDAR scanners, drone photogrammetry, robots, and custom-built reality capture systems. Keep your team productive. Cupix 3D Digital Twins enable you to virtually inspect, annotate, and take measurements for any project, from the safety of your home. Catch and resolve costly mistakes before they happen. -
3
Platforma
MiLaboratories
Platforma is a no-code bioinformatics software that converts raw next-generation sequencing (NGS) data into insights. It offers a user-friendly interface with modular, no-code "blocks" for complex analysis tasks like immune repertoire, single-cell, and gene expression data. Building on the legacy of its predecessor, MiXCR, Platforma also enables AI-powered selection for antibody/TCR candidates. The platform is designed to be accessible to scientists without a bioinformatics background, allowing for scientists to take control of their own discoveries and reduce time to insight. -
4
SelfCAD
SelfCAD
SelfCAD is a 3D modeling for users of all levels. There is an online as well as downloadable versions for Windows and Mac. Most of the CAD programs available are either expensive or don’t generally provide all the necessary 3D modeling and printing tools. Some take months or years to learn and are meant for specific industries. SelfCAD has bridged this gap as it’s affordable, easy to learn and it targets all the industries. It has a simplified user interface too making it a perfect tool for novice users. SelfCAD is fully-featured including modeling, Sculpting, rendering, simple animations, and 3d print slicer, but the aggregate amount of tools is much less than any compatible software package because of its brilliant UX. The in-built slicer of SelfCAD is handy as it helps prepare the designs for printing without having to switch to another program. SelfCAD is very affordable. There are interactive tutorials available that helps one learn 3D modeling with much ease.Starting Price: Free -
5
KIRI Engine
KIRI Innovations
KIRI Engine is a 3D scanning app based on photogrammetry and is one of the only 3D scan apps to be available for both iOS and Android. This 3D scanner app generates vibrant, colored 3D scans for use in VFX/CGI, AR, 3D printing, and more. KIRI Engine is free to download and use, with 3 free 3D scan exports every week. The Premium plan, at $6.99/mo or $49.99/y, grants more photos per scan (200 photos vs 70), faster processing, and unlimited exports. Premium also lets you upload photos directly from your PC, just like professional photogrammetry software. A few highlights from KIRI Engine (for all users): - Choice between low, medium, and high-quality exports - AI-based algorithms to limit the impact of lighting changes - Option to use a turntable - Manually select/remove photos from a project - Creator Program: get paid for your scans! As long as you take enough photos from enough angles, you can get some fantastic results with the KIRI Engine 3D scanner app. Try it out! :)Starting Price: $6.99/month or $49.99/year -
6
Matterport
Matterport
Our powerful all-in-one 3D data platform lets you turn a space into an accurate and immersive digital twin. Create experiences like nothing you’ve ever seen before. Digitize and view your space from multiple angles, build functionality on top of it, get accurate measurements, and more. With a single scan, you can automatically create 3D walk-throughs, 4K print quality photos, schematic floor plans, OBJ files, point clouds, videos, and other media.* Zoom out and see a 3D digital twin of your property from the outside and rotate it along any axis to see it from any perspective. You’ll be able to get the big picture of your space. Embed annotations and media in your digital twin to highlight key features of your property. Generate schematic floor plans of your property with the push of a button. Measure any aspect of your space, such as walls, windows, furniture, and more.Starting Price: $9.99 per month -
7
RIB SpecLink
RIB Software
No other specification software helps you work smarter or faster than SpecLink. Save time. Save money. Get it right. Every phase. Every time. Enhance the specification process at every stage. SpecLink specification software—improves efficiency and accuracy in the building design process. And with SpecLink now in the cloud, you can produce specifications even faster by collaborating across teams. Streamline every phase of your construction project with the industry’s best building specification content. SpecLink is intuitive specification-writing software that helps you make more informed decisions, faster, through every phase of the design process. SpecLink combines the industry’s best content with the most advanced software on the market. Our master guide specification writing, management, and production system with built-in intelligence is designed to help you dramatically speed up editing tasks and reduce specification production time while minimizing errors and omissions.Starting Price: $1695.00 per year -
8
Onshape
Onshape
Onshape by PTC is the leading cloud-native CAD & PDM platform that runs on any device, anywhere-requiring zero IT. Onshape is for product design companies who are fed up with the errors, time waste, and hidden costs of outdated file-based CAD & PDM.Starting Price: $125.00/month/user -
9
Asite
Asite
Asite is an open construction platform that enables organizations working on capital projects to come together, plan, design, and build with seamless information sharing across the entire supply chain. Asite’s range of solutions connect dispersed teams across the lifecycle of capital assets, enabling them to build better and build resilience. With Asite, capital project owners stay at the forefront of innovation, maintaining a golden thread of information throughout a project to facilitate the creation of digital twins.Starting Price: $375.00/month/user -
10
Simile
Simulistics
Simulistics develops and distributes Simile, modelling and simulation software for complex dynamic systems in the earth, environmental and life sciences. We use unique logic-based declarative modelling technology to represent the interactions in these systems in a clearly structured, visually intuitive way. Using Simile makes modelling a more productive task for scientific investigators. Models can be prepared more quickly, shared more easily and maintained more efficiently. Object-based representation, for handling disaggregation and individual-based modelling. Auto-generated C++ model code, for fast execution. Plug-and-play modules, supporting modular modelling, any part of a model can be extracted and used separately. Plug-in displays, allowing you to create graphics specific to your field. Declarative model representation, making it easy to manipulate the model in complex ways.Starting Price: $300.00/one-time/user -
11
ArchitectureQuote
ArchitectureQuote
ArchitectureQuote presents an innovative platform to help you find the right architect for any type of project and get projects estimates for free! Start your project and get a free quote instantly! Create your online profile with requirements and inspirational pictures and proposals will not make you wait. Browse through architects portfolios, ask questions, get more inspiration and find the one architect that fits your needs best. Instantly receive proposals from Architects automatically. Compare and collaborate with Architects for the best proposals and designs.Starting Price: $79.00/month -
12
ENACT Solar Software
ENACT Systems
Our innovative platform speeds up sales and project execution, delivering high performing solar and energy storage systems. Features include: remote design using satellite images, proposals with detailed pricing and energy analytics, and seamless project management. Our app for end-customers is the first of it’s kind; the only platform that verifies predictive performance and savings. Features included solar and storage power-flows, utility bill savings, and performance analytics. Multiple workflows for team members and task assignment. Use high-resolution satellite images to create residential or commercial layouts. Close deals faster with beautiful and accurate proposals. Manage projects to rapid completion and impress customers.Starting Price: $199 per month -
13
FlytBase
FlytBase
FlytBase is an enterprise-grade drone autonomy platform to fully automate aerial data collection workflows. With little to no human intervention, users can conduct scheduled and repeatable BVLOS drone flights using docking stations, all controlled from their remote command centers. By enabling apps and integrations and ensuring the highest data security standards, reliability, and scalability, the FlytBase platform lets users seamlessly integrate autonomous drones into enterprise workflows.Starting Price: $0/user -
14
RFEM
Dlubal Software
The FEA program RFEM allows for quick and easy modeling, structural and dynamic calculation, as well as the design of models with member, plate, wall, folded plate, shell, and solid elements. Due to the modular software concept, you can connect the main program RFEM with the corresponding add‑ons in order to meet your individual requirements. The structural analysis program RFEM provides structural engineers with a 3D FEA program that meets all requirements in modern civil engineering. Efficient data input and intuitive handling facilitate the modeling of simple and complex structures. The structural analysis program RFEM is the basis of a modular software system. The basic program RFEM is used to define structures, materials, and loads for planar and spatial structural systems consisting of plates, walls, shells, and members. The program also allows you to create combined structures as well as model solid and contact elements.Starting Price: €697.50 rent 1 month -
15
Mapware
Mapware
Mapware is the future of drone mapping software. Generate bigger, better 3D maps in the cloud. With Mapware’s easy-to-use interface, anyone can turn 2D drone photos into photorealistic 3D environments using a process called photogrammetry. Powerful enough for the biggest challenges. Simple enough for any project. Whether you want to map one building, a dozen cell towers, a whole oil field, or even an entire city, Mapware is the best tool for the job. Our browser-based software is easy to access from any device.Starting Price: $99 -
16
ReluxDesktop
RELUX Informatik AG
ReluxDesktop is a high-performance, intuitively-operated application for simulating artificial light and daylight. It provides you with rapid and efficient support on all the different aspects of big and small projects, without taking any unnecessary roundabout routes. Simulation of lighting and sensors in real-time! Calculation of absolute values, national and international standards, compatible with CAD and BIM systems, plus a great deal more. The application is available to you free of charge thanks to the support of our partners in the industry. Make ReluxDesktop your day-to-day tool, you'll be surprised how much time you save with it! Add-on for other programs. Useful functions for Autodesk Revit. Add-on for ReluxDesktop. Real tunnel calculation based on the current standards.Starting Price: free of charge -
17
RWIND
Dlubal Software
The wind simulation program RWIND, like the other Dlubal Software programs, is easy to use and reliably provides the required result. If using RWIND, the wind will certainly not be taken out of the sails of your project. RWIND allows you to analyze wind flows (digital wind tunnel) around buildings or any other objects. For this, RWIND uses a CFD simulation (Computational Fluid Dynamics) and shows you how the wind flows affect the generated structures. Run a wind simulation for simple or complex structures – the result will always speak for itself. You can then simply import the wind loads calculated with RWIND into RFEM or RSTAB.Starting Price: €2,950 one-time payment -
18
MyArchitectAI
MyArchitectAI
MyArchitectAI is an AI-powered rendering tool that enables architects and interior designers to produce photorealistic images in under 10 seconds directly from their browser, eliminating the need for installations or expensive hardware. Compatible with major CAD and 3D modeling software, it supports JPG and PNG uploads, preserving the original geometry, colors, and materials of designs. Users can customize renders by describing desired outcomes or selecting from over 80 predefined architectural styles, materials, and landscapes. The AI engine manages modeling, lighting, and texturing, delivering 4K resolution images ready for client presentations or further editing. Additionally, the style transfer feature allows experimentation with various design aesthetics by blending reference images with original designs while maintaining the initial geometry. This accelerates the conceptualization process, aiding clients in comprehending design visions early on.Starting Price: $29/month -
19
Cableizer
Braavos GmbH
Cableizer is a software package for the electrical, mechanical, and thermal design of cable systems. Cableizer is completely web-based: it's inexpensive, widely available, easily customizable, has improved interoperability, and is easier to install and maintain than a desktop application. Properties * Software-based design of cables up to 500 kV! * Cable calculations including mass, heat of combustion, CO2, price, etc. * Calculations of rated current and cable pulls * Environmental calculations including magnetic fields and increase in ground temperature * Web-based without installation or dongle, but with automatic updates * Collaborate with share links directly with customerStarting Price: 333 EUR/month -
20
RealityMAX
Atomic Pixels
The 3D design collaboration platform to boost your design workflows. Invite your teammates to collaborate in real-time, build, compose and present in a whole new way. Start building 3D projects together, faster. Stop struggling with different desktop design software and tools at every stage of the process, sending massive files back and forth, and wasting endless hours exporting assets. RealityMAX technology makes all this a thing of the past. Create scenes with multiple 3D models. All major 3D file formats are supported. Share the same 3D workspace, at the same time, working remotely. Get your content out in the world as Web 3D or AR experiences, or insert it on your web page. Invite people to your virtual 3D workspace with just one link. Bring your teammates together from anywhere using the same collaboration software. See changes and updates as they are made, from any device.Starting Price: $40/mo -
21
4Reality
4Reality Studio
4Reality is a versatile real-time rendering software designed to deliver photorealistic visualizations and simulations. It supports CAD and 3D model imports, offering advanced features like Lumen and Pathtracing technologies, dynamic sky simulation, and real-time VFX. Equipped with libraries of materials and models, 4Reality streamlines design processes for professionals in architecture, engineering, and product design. The software supports real-time DEM and CFD simulations, VR headset compatibility, point cloud imports, and advanced material creation. Additional tools include dynamic scene control, saved camera views, interactive annotations, and rendering without resolution limits. Available in French and English, 4Reality transforms 3D models into lifelike experiences.Starting Price: Free -
22
PoligonSoft
PoligonSoft
Professional tools for modeling and optimizing metal casting processes with the ability to predict the formation of defects in cast parts. - Filling Dynamics - Macro and Microporosity - Residual Stresses - Deformations and Warping - Cracks (Hot and Cold) - Hydrostatic Pressure - Mold Wear - Slag Formation PoligonSoft provides reliable simulations that prevent waste and costly redesigns, allowing manufacturers to "get it right" the first time. The core of PoligonSoft includes three calculation systems: hydrodynamic, thermal, and stress. Along with a set of additional options, it allows the simulation of all traditional casting technologies and many special processes. At PoligonSoft, all stages of the casting production process can be sequentially simulated: mold heating, mold filling with molten mass, solidification on the bench or in the thermostat, extraction of the cast part from the mold, cutting of the feeding system and risers, etc.Starting Price: $14,137 USD/year -
23
Avoyd
enkisoftware
Avoyd Voxel Editor and Renderer Create, import, export and render large voxel worlds. 3D art and rendering tool for voxel artists, map builders and game developers. Main Features: - Large scenes up to 256k voxels a side. - CPU and GPU path traced rendering. - Export to optimised mesh glTF and OBJ with physically-based materials parameters, and VOX. - Import MagicaVoxel VOX, Minecraft maps, heightmaps, palettes. - Orthographic projection with Isometric presets. - Up to 65k physically based materials. - Physically based light and atmosphereStarting Price: €15 one-time payment -
24
RSECTION
Dlubal Software
Do you often spend too long calculating cross-sections? Dlubal Software and the RSECTION stand-alone program facilitate your work by determining section properties of various cross-sections and performing a subsequent stress analysis. With the stand-alone program RSECTION, Dlubal Software provides you with a time-saving solution for the calculation of thin-walled and massive cross-sections. The program determines the section properties and performs a stress analysis. The seamless integration with the FEA software RFEM and the structural frame & truss analysis software RSTAB allows for efficient cooperation. RSECTION cross-sections are available in the RFEM and RSTAB libraries, and you can easily import the internal forces in the programs.Starting Price: €292.50 rent 1 month -
25
RSTAB
Dlubal Software
RSTAB is a powerful analysis and design software for 3D beam, frame, or truss structure calculations, reflecting the current state of the art and helping structural engineers meet requirements in modern civil engineering. Use the successful structural frame & truss analysis software RSTAB for your design of beam, frame, or truss structures consisting of steel, reinforced concrete, timber, aluminum, or other materials. With RSTAB, you can easily and quickly define a structural model and then calculate the internal forces, deformations, and support reactions. There are design add-ons at your side that you can use to consider the material- and standard-specific requirements.Starting Price: €487.50 rent 1 month -
26
RunMat
Dystr
RunMat (by Dystr) is a fast, free, open-source alternative for running MATLAB code. Users can run their existing MATLAB code with complete language grammar and core semantics. No license fees, no lock-in. RunMat is built with a modern compiler, which enables blazing-fast calculations. It boots in 5 milliseconds, GPU optimization is enabled by default, and it's a single, compact, cross-platform binary. Typical engineering use cases - Controls/signal processing & numerics: accelerate MATLAB-style loops plus heavy linear algebra; enjoy faster iteration due to instant startup and tiered JIT. - Batch/CI & serverless jobs: snapshots + compact binaries make it easy to run .m workloads in containers or ephemeral runners at scale. - Plot-heavy workflows: interactive GPU plots for exploratory analysis and reportable exports for stakeholders. - Education: remove license friction and start labs instantly; Jupyter kernel supports reproducible worksheets.Starting Price: $0 -
27
HQDFM
NextPCB
HQDFM – Smart DFM Analysis for PCB Engineers (Free Tool) HQDFM is a fast, intelligent, and free Design for Manufacturability tool that helps you catch PCB design issues before they become expensive production problems. Key Features • Supports Allegro, Altium, PADS, Protel, ODB++, Gerber • One-click DFM risk detection • 23+ manufacturability rule checks • Automatic PCB stack-up recommendations • Impedance calculation & reverse calculation • BOM parameter verification • Pinpoint issue locations with actionable fixes • 100% free – no trial limits Build better PCBs with confidence. HQDFM makes design-to-production seamless.Starting Price: $0 -
28
HydroCAD
HydroCAD Software Solutions
HydroCAD Stormwater Modeling provides easy TR-20, TR-55, SBUH, and Rational hydrology, plus TC calculations, pond storage, outlet hydraulics, pump routing, underground storage, pollutant loading, and more. Special features include direct CAD import, dam breach routing, skimmers, tubes, siphons, local rainfall data import, and a constantly expanding chamber library. Interactive graphical environment is fast and intuitive, producing better results in less time on every project.Starting Price: $295.00 -
29
RETScreen
RETScreen International
The RETScreen® Clean Energy Management Software platform enables low-carbon planning, implementation, monitoring and reporting. RETScreen Expert, an advanced premium version of the software, is available in Viewer mode completely free-of-charge. We collaborate with government and multilateral organizations to co-fund and develop advanced versions of the RETScreen® Clean Energy Management Software platform. RETScreen Expert, the intelligent version of the software, incorporates benchmark, feasibility, performance and portfolio analysis for various types of facilities, including commercial, institutional, residential, industrial and power generation, all within one comprehensive platform. The focus of our innovation lab is to ensure that the RETScreen software is always at the leading edge of the clean energy technology transition, and that we continuously improve our platform to meet the complex needs of our large and rapidly growing global user community.Starting Price: $869 per year -
30
Simcad Pro
CreateASoft, Inc.
Simcad Pro lets you visualize, analyze and optimize process flow systems in an interactive 2D/3D simulation modeling environment. Plan, optimize, and re-arrange processes and procedures while optimizing layouts, facility improvement, automation and scheduling. Simcad Pro integrates live and historical data to provide the most effective simulation tool on the market. Applications in multiple industries including manufacturing, automation, logistics, distribution warehouse, food and beverage, services, and more. Multi-Threaded - 64 bit Engine. On-the-fly simulation - Make real-time changes to the model while the simulation is running. Animate the model in 2D, 3D and VR with Ray Tracing, light effect, and shadows. Singular model building environment. Smart, Spatially Aware Agents, Sub-Flows, Collision Avoidance and Real-Time Connectivity. Spaghetti Diagrams, Congestion Analysis, Heat Maps, Efficiency and OEE. Extensive reporting and analysis tools. Scenario Analyzer.Starting Price: $4950.00/one-time/user
