OpenFOAM Alternatives (September 2025)

Simcenter STAR-CCM+ is a computational fluid dynamics (CFD) software used to simulate products operating under real world conditions.

FreeCAD, the open source 3D parametric modeler

See how Ansys computational fluid dynamics (CFD) simulation software enables engineers to make better decisions across a range of fluids simulations.

The Microsoft Build of OpenJDK is a new no-cost long-term supported distribution and Microsoft’s new way to collaborate and contribute to the Java ecosystem.

Open source EDA / electronics CAD software for Windows, macOS and Linux. Use schematic capture, create PCB designs and view them in 3D, all forever free.

Dia is free (open source) drawing software. Sketch your favorite structured diagrams! Windows version available as a free download.

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps.

FileZilla - The free FTP solution for both client and server. Filezilla is open source software distributed free of charge.

An easy, intuitive tool to make 2D hand-drawn animations.

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

The Eclipse Foundation provides our global community of individuals and organisations with a mature, scalable, and business-friendly environment for open source …

OpenFlows WaterCAD is an easy-to-use hydraulic modeling application for the analysis, design, and operation of water distribution systems.

Ansys Fluent is the industry-leading fluid simulation software known for its advanced physics modeling capabilities and unmatched accuracy.

SapMachine : The OpenJDK release maintained and supported by SAP

OpenCV provides a real-time optimized Computer Vision library, tools, and hardware. It also supports model execution for Machine Learning (ML) and Artificial Intelligence (AI).

SimScale is a full-cloud CAE simulation software that helps you perform CFD, FEA, and thermal simulations for CAD models in the cloud.

AFT pipe flow analysis and modeling software is used by engineers in over 80 countries. Learn more and download a free demo.

FreeRTOS is an open source, real-time operating system for microcontrollers and microprocessors that makes small, low-power devices easier to program, deploy, and secure.

Google <3 Open Source

The Freedom to Create

Inkscape is professional quality vector graphics software which runs on Linux, Mac OS X and Windows desktop computers.

OpenSolar provides class-leading solar design accuracy, customer proposals and end-to-end tools to manage and grow your solar business, free.

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases. MantisBT has been installed on Windows, Linux, Mac OS, OS/2, and others. It is released under the terms of the GNU General Public License (GPL).

Sylpheed - Sylpheed はシンプル、軽量かつ高機能で使いやすい、無料のメールソフトです。Sylpheed は Windows から Linux まで様々なプラットフォームに対応しています。

Tecplot 360 integrated postprocessing environment allows you to analyze detailed flow-field data while producing exceptional visual output

Free desktop project scheduling and management app with Gantt chart for Windows, Linux and macOS

Amazon Corretto is a no-cost, multiplatform, production-ready distribution of the Open Java Development Kit (OpenJDK). Corretto comes with no-cost long-term support. Amazon runs Corretto internally on thousands of production services and Corretto is certified as compatible with the Java SE standard.

Ansys engineering simulation and 3D design software delivers product modeling solutions with unmatched scalability and a comprehensive multiphysics foundation.

libGDX is a cross-platform Java game development framework based on OpenGL (ES) that works on Windows, Linux, macOS, Android, your browser and iOS.

OpenShot is an award-winning free and open-source video editor for Linux, Mac, and Windows. Create videos with exciting video effects, titles, audio tracks, and animations.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Free interior design software. Draw the plan of your home or office, test furniture layouts and visit the results in 3D.

The Jupyter Notebook is a web-based interactive computing platform. The notebook combines live code, equations, narrative text, visualizations, interactive dashboards and other media.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

Ubuntu is the modern, open source operating system on Linux for the enterprise server, desktop, cloud, and IoT.

GNU Octave is a programming language for scientific computing.

Modo is a world-class 3D design software. It empowers designers to handle 3D modeling, animation, texturing & rendering at the speed of thought.

A free and open source software to merge, split, rotate and extract pages from PDF files. For Windows, Linux and Mac

Bazaar version control system: easily manage source code on Windows, Ubuntu, GNU/Linux, and Mac OS X

Intuitive, customizable and backed by unmatched technical support, CHEMCAD is the leading chemical engineering simulation software that adapts to your specific needs. Start solving simple and complex chemical processes with incredible efficiency today.

Ansys provides high-performance, automated meshing software that produces the most appropriate mesh for FEA, CFD and other multiphysics solutions.

pgAdmin - PostgreSQL Tools for Windows, Mac, Linux and the Web

Cuckoo Sandbox is the leading open source automated malware analysis system.

OmegaT is a free open-source translation memory application for professional translators written in Java.

Explore Ansys Twin Builder, a powerful digital twin platform for modeling, simulating and analyzing virtual system prototypes and predictive maintenance.

GnuPG is a free implementation of OpenPGP

Design, analyze & visualize high-performance and sustainable buildings with OpenBuildings, Bentley's all-in-one BIM software.

VLC: Official site - Free multimedia solutions for all OS!

PetraSim software is the graphical interface for the TOUGH2 family of simulators. Solve challenging subsurface flow problems with PetraSim

CINC is not Chef

VeraCrypt is free open-source disk encryption software for Windows, Mac OS X and Linux. In case an attacker forces you to reveal the password, VeraCrypt provides plausible deniability. In contrast to file encryption, data encryption performed by VeraCrypt is real-time (on-the-fly), automatic, transparent, needs very little memory, and does not involve temporary unencrypted files.

Ansys HFSS 3D electromagnetic simulation software for designing and simulating high-frequency electronic products such as antennas, PCBs, IC packages, etc.

Explore Ansys LS-DYNA, an explicit dynamics solver that simulates the extreme materials deformation response of structures to periods of severe loading.

FreeShow is a free and open-source presenter software for anyone to use with ease.

Chemical drawing and publishing software for Windows, macOS and Linux. Affordable and used by thousands of scientists around the world. Free trial available for immediate download.

PV*SOL is the industry's leading 3D solar software with the most detailed configuration and shade analysis for PV systems.

.NET is a free, cross-platform, open-source developer platform. .NET has languages, editors, and libraries to build for web, mobile, desktop, games, and IoT.

Create binge-worthy films & TV shows with Nuke. Leading video editing software in compositing, editorial & film editing for pixel-perfect results.

3D modeling software to create, edit, and modify CAD or STL files for design, reverse engineering, simulation, manufacturing, 3D printing, and sheet metal.

Why NumPy? Powerful n-dimensional arrays. Numerical computing tools. Interoperable. Performant. Open source.

Godot provides a huge set of common tools, so you can just focus on making your game without reinventing the wheel.

Systems modeling and simulation tool. Experiment and optimize from concept to production. Accurately simulate and analyze before making decisions. Based on the Wolfram Language.

An open source community working under The Linux Foundation to address storage integration challenges in scale-out cloud native environments. Its vision is to connect siloed data solutions to build a self governed and intelligent data platform.

Chaos develops visualization technologies that empower artists & designers to create photorealistic imagery and animation across all creative industries

Chaos develops visualization technologies that empower artists & designers to create photorealistic imagery and animation across all creative industries

AWStats Official Web Site - Compile and generate advanced graphical web, ftp or mail statistics with a logfile analysis (For IIS, Apache,... distributed under GNU GPL).

OctoPrint is the snappy web interface for your 3D printer that allows you to control and monitor all aspects of your printer and print jobs, right from your browser.

OpenStack is an open source cloud computing infrastructure software project and is one of the three most active open source projects in the world.

Dragonframe is the industry standard stop motion animation software. Discover why it is the choice of major movie studios and independent filmmakers.

Oqton Freeform is the industry’s most comprehensive design software for any complex or organic models. Solve your physical design challenges in the digital world. | Freeform - 3D Design Software for Organic Models

Free office suite – the evolution of OpenOffice. Compatible with Microsoft .doc, .docx, .xls, .xlsx, .ppt, .pptx. Updated regularly, community powered.

Optimize system performance early in the design stages to boost engineering productivity with Amesim system simulation software.

Drupal is an open source platform for building amazing digital experiences. It's made by a dedicated community. Anyone can use it, and it will always be free.

We believe our research will eventually lead to artificial general intelligence, a system that can solve human-level problems. Building safe and beneficial AGI is our mission.

The official home of MATLAB software. MATLAB is the easiest and most productive software environment for engineers and scientists. Try, buy, and learn MATLAB.

An end-to-end open source machine learning platform for everyone. Discover TensorFlow's flexible ecosystem of tools, libraries and community resources.

AnyLogic is the leading simulation software for business, utilized worldwide in many industries, including logistics, manufacturing, mining, healthcare, etc.

Creo Elements/Direct is a comprehensive system for mechanical engineers and designers who create products using the ‘direct modeling’ approach to 3D CAD.

Krita is a professional FREE and open source painting program. It is made by artists that want to see affordable art tools for everyone.

Open source project management software for classic, agile or hybrid project management: task management✓ Gantt charts✓ boards✓ team collaboration✓ time and cost reporting✓ FREE trial!

At Waterloo Hydrogeologic, our goal is to provide powerful, and yet easy-to-use, groundwater software to professionals in the environmental business. We remain an industry leader with over 5,000 registered installations of our software in over 75 different countries around the world.

TYPO3 is a free enterprise-class CMS based on PHP. It combines open source code with reliability and true scalability. This is the official project website.

Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more.

Aquaveo: Water resources software and engineering consulting services for modeling groundwater, surface-water, and watershed hydraulics & hydrology.

An open-source universal messaging library

nanoCAD - professional, cost-effective CAD Software with powerful 2D/3D modeling tools for viewing and drawing DWG files in engineering and architecture. Free download.

Website for Spyder, the Scientific Python Development Environment

Autodesk Fusion, formerly Fusion 360, is a platform for 3D CAD, modeling, manufacturing, industrial design, electronics, and mechanical engineering. Subscribe or download for free.

Powerful and flexible web hosting control panel for Linux and BSD systems

Keygen is a powerful software licensing API for desktop apps, on-premise software and other software products written in C++, C#, Swift, Java, Kotlin, Node and more.

GLPI is a leading Service Management solution which offers Helpdesk, CMDB, Asset Management, Project Management on one platform.

The Art of Surface Modeling

An innovative platform for hardware, clouds, and containers, built with love by you.

Cadblocksfree.com is an online CAD library with thousands of free CAD blocks and CAD models including 3ds max models , Revit families , AutoCAD drawings , sketchup components and many more.

Snort is an open-source, free and lightweight network intrusion detection system (NIDS) software for Linux and Windows to detect emerging threats.

Mbed OS is the fastest way to build IoT products with Arm processors

Multi-Engineering Modeling and Simulation based on Modelica and FMI

See how Ansys Chemkin-Pro models gas-phase and surface chemical reactions in combustion systems in cars, trucks, jet engines, boilers, and more.