Open Cascade

What Open Cascade does

Open Cascade is a Paris-based software company and wholly-owned subsidiary of Capgemini, operating as part of Capgemini Engineering (the global Engineering and R&D business line with 52,000 engineers and scientists, launched April 2021). The company was founded in 1999 as the original developer of Open CASCADE Technology (OCCT), which it describes as the only open-source full-scale 3D kernel. Open Cascade maintains and extends OCCT under the GNU LGPL license and has offices in France and Portugal, with 101-250 employees. The company sells a three-tier stack: the open-source OCCT kernel (geometric modeling, visualization, mesh generation, and data exchange); a portfolio of commercial add-on components (IFC, JT, ACIS, Parasolid, DXF importers/exporters, Express Mesh, Volume Rendering, BestFit, Unfolding, PMI Visualization, C#/Java wrappers, and others distributed via occt3d.com); and end-user products including CAD Builder (parametric modeler), DMU Reviewer (multi-CAD viewer), Asset Revamping (web-based 3D digital mock-up), and Web 3D Viewer.

Open Cascade's commercial model combines quote-based enterprise licensing of components and SDKs, a recurring A la Carte technical support subscription (Helpdesk, Technical Support, Consulting, Bug Corrections), and project-based custom software development and training services delivered on-site, at the Porto office, or online. The go-to-market is enterprise field sales complemented by event participation (Mobile World Congress, World Nuclear Exhibition, FOSDEM, AVEVA World Conference) and community channels (developer portal, OCCT Marketplace, Git repository, research publications portal with 200+ indexed articles). Pricing is not publicly disclosed and is set per engagement.

The company targets heavy industrial verticals — Energy & Utilities, Manufacturing (automotive, special-purpose and heavy machinery), Marine & Shipbuilding, Life Sciences, Telecommunications, and Metrology — and counts marquee industrial customers including BMW, Airbus, EDF, CEA, IRSN, Thales Alenia Space, RINA, Korean Register, HOMAG, ArcelorMittal, Samsung Heavy Industries, Yazaki, Principia, DBM Reflex, and Twin Robotics. The strategic positioning is anchored on a 'digital continuity' value proposition: breaking silos between isolated industrial IT systems and enabling end-to-end 3D data flow, asset management, and digital twin implementations through the OCCT-based platform plus integration and consulting services.

Name

Open Cascade

Legal name

Open Cascade

Website

https://opencascade.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

101–250 employees

Short description

Open Cascade is a Paris-based subsidiary of Capgemini that develops and maintains Open CASCADE Technology (OCCT), the only open-source full-scale 3D kernel, serving industrial enterprises with commercial 3D components, end-user CAD and visualization products, custom software, and digital continuity solutions.

Ownership category

akta.pro rank

Product category

3D Computer-Aided Design (CAD) Software

NAICS

Custom Computer Programming Services (541511), Computer Systems Design and Related Services (54151), Scientific Research and Development Services (5417)

SIC

Services-Computer Programming Services (7371), Services-Prepackaged Software (7372)

akta.pro primary industry

Asset Creation, Pipeline, DCC Integration & Content Management Tools (MPAFAFAL)

Keywords

• 3D CAD software
• Geometric modeling kernel
• 3D visualization software
• Digital twin solutions
• CAD data exchange

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Custom Software Development: Variety of software development and consulting services offered to industrial companies. Services include custom solution development based on proprietary Open CASCADE Technology.
2. Commercial Platform Licenses: Licensing of commercial platform components including CAD Builder, CAD Processor, DMU Reviewer, Asset Revamping, Web 3D Viewer, and various data exchange/visualization components.
3. Technology Support Services: Technical support services including 'A la Carte' support program providing Helpdesk Query, Technical Support, Technology Consulting, Bug Corrections & Improvements.
4. Training Programs: Instructor-led training courses and e-learning programs on Open CASCADE Technology and SALOME platform. Training courses include Fundamentals (5 days), Application Framework (3 days), Shape Healing (2 days).
5. Software Customization: Customization of proprietary products to tailor solutions to specific customer workflows. Includes software development, configuration, and maintenance services.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

Open Cascade develops, maintains, and commercializes Open CASCADE Technology (OCCT), the only open-source full-scale 3D CAD kernel, alongside a commercial platform of end-user products (CAD Builder, DMU Reviewer, Asset Revamping, Web 3D Viewer, CAD Processor), added-value data exchange and processing components, and professional services (custom software development, technical support, and training) for industrial enterprises in marine, energy, manufacturing, automotive, aerospace, and telecommunications.

Product overview

Open Cascade offers a platform-plus-modules architecture anchored by Open CASCADE Technology (OCCT), the world's only open-source full-scale 3D CAD kernel. The Open Cascade Platform serves as the commercial hub unifying all products for systems integration and custom solutions. The product portfolio consists of three tiers: (1) the OCCT open-source kernel providing core geometric modeling, visualization, mesh, and data exchange; (2) commercial added-value components (SDKs) for data exchange (IFC, JT, ACIS, Parasolid, DXF), visualization (Volume Rendering, Web 3D Viewer, Light Web Viewer), processing (Express Mesh, CAD Processor, BestFit, Canonical Recognition, Unfolding, Collision Detection, Surface Wrapping, Mesh Framework, PMI Visualization, CAM Library), and language wrappers (C#, Java); and (3) end-user products built on the platform — CAD Builder (parametric CAD modeler), DMU Reviewer (multi-CAD desktop viewer and analyzer), Asset Revamping (web-based 3D digital mock-up), and Web 3D Viewer (browser-based 3D visualization). Supporting services include Technical Support (A-la-Carte), Custom Software Development, Software Customization, Expert Consulting, and Training Programs. The company joined Capgemini Engineering in 2014 and operates as part of Capgemini's Engineering and R&D global business line.

Differentiator

Problem solved

Functional benefit

Brands

• Open CASCADE Technology (OCCT): The company's world-famous open-source 3D kernel for CAD modeling, visualization, and data exchange. Available under GNU LGPL license.
• Open Cascade Platform
• OCCT3D
• Asset Revamping
• CAD Builder
• DMU Reviewer
• CAD Processor
• Web 3D Viewer

Products and services

• Open CASCADE Technology (OCCT) The world's only open-source full-scale 3D CAD kernel providing geometric modeling, visualization, data exchange, and mesh generation capabilities, used as the foundational technology across all Open Cascade products. Available free under GNU LGPL v2.1 license.
• Open Cascade Platform A unified commercial hub for rapid systems integration and building custom business solutions. Serves as the backbone that unifies multiple software functionalities across the product portfolio, enabling end-to-end data management from acquisition through visualization for industrial enterprises.
• CAD Builder A parametric CAD modeler for creating and modifying 3D models with support for multi-dimensional geometries, non-manifold topologies, and Python scripting. Derived from the SALOME SHAPER Module, supporting STEP, IGES, BREP, XBF, and STL formats. Targeted at industrial CAD users.
• DMU Reviewer A multi-CAD desktop viewer and analyzer for 3D design review and analysis. Supports popular proprietary and native CAD formats, enabling assembly exploration, filtering, clipping planes, sections, GD&T measurements, PMI viewing, and color heating maps by attributes. Targeted at industrial design and engineering teams.
• Asset Revamping
• CAD Processor A suite of tools for healing, simplification, inspection, and conversion of 3D CAD models. Available as SDKs for developers to integrate CAD processing capabilities into their applications. Targeted at software developers and engineering teams.
• Web 3D Viewer
• Commercial Platform Components (IFC, JT, ACIS, Parasolid, DXF, Express Mesh, BestFit, etc.) Licensed add-on components for OCCT that enable data exchange (IFC, JT, ACIS, Parasolid, DXF), processing (Express Mesh, BestFit, Canonical Recognition, Unfolding, PMI Visualization, C#/Java Wrappers), and advanced visualization (Volume Rendering, Point Cloud Rendering). Targeted at software developers and engineering teams extending OCCT-based applications.
• A-la-Carte Technical Support Program
• Custom Software Development Services
• Training Programs

Quantifiable outcome

• BMW shortened mesh generation process from several days to several hours using Quick Mesh Application
• +4 more outcomes

Named customers17 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Four partnerships are on record, tiered minor and core.

• WinDTwin Project ConsortiumminorStrategic or Co-development Partner · 9 July 2024Open Cascade participates in WinDTwin, a European-funded project for offshore wind energy optimization. The project represents a new era of offshore wind energy transformation.
• GICAN (French Marine Industry Group)coreStrategic or Co-development Partner · 8 January 2021Open Cascade joined GICAN, which affiliates more than 200 industrialists in the maritime industry. GICAN brings together shipyards, system and equipment manufacturers, subcontractors, engineering and architect businesses involved in design, construction, maintenance of military and civilian vessels.
• Digital Twin ConsortiumcoreStrategic or Co-development Partner · 12 November 2020Open Cascade joined the Digital Twin Consortium in November 2020, becoming part of an ecosystem dedicated to widespread adoption of digital twin technology. The Consortium coalesces industry, government, and academia to drive consistency in architecture, security, interoperability and vocabulary of digital twin technology.
• ROBINS Project ConsortiumminorStrategic or Co-development PartnerSince 2018 Open Cascade is a member of ROBINS project consortium, bringing expertise in 3D technologies to establish regulatory framework for inspection in industrial applications.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• Dassault Systèmes: Dassault Systèmes delivers CATIA, SOLIDWORKS, and the 3DEXPERIENCE platform — established enterprise CAD/PLM systems that compete with Open Cascade's commercial products (CAD Builder, DMU Reviewer) while also incorporating ACIS and competing CAD kernels against OCCT for embedded use cases.
• Autodesk: Autodesk offers AutoCAD, Inventor, and Fusion 360 — broad enterprise and mid-market CAD/PLM offerings competing with Open Cascade across design, review, and digital mock-up workflows (DMU Reviewer, CAD Builder, Asset Revamping).
• ANSYS: ANSYS provides simulation platforms that interoperate with major CAD kernels (including OCCT, Parasolid, ACIS) and compete indirectly through integrated geometry and CAE workflows targeted at the same engineering enterprise customers Open Cascade serves with EDF, IRSN, CEA, and Thales Alenia Space.
• Altair Engineering: Altair delivers engineering simulation, design (Inspire), and CGM-developed geometric kernel technology that overlaps with OCCT's geometric modeling and visualization stack across simulation-driven design workflows.
• PTC: PTC's Creo CAD platform and Onshape cloud CAD compete with Open Cascade in parametric 3D modeling for industrial customers (e.g., HOMAG-style machinery manufacturers) and provide direct alternatives to CAD Builder and related commercial products.
• Spatial (Dassault Systèmes): Spatial develops the ACIS 3D geometric modeling kernel — one of OCCT's principal commercial alternatives for CAD/CAM application development. Acquired by Dassault Systèmes, Spatial offers a broader portfolio including CGM kernel and 3D InterOp data exchange, overlapping substantially with OCCT's geometric modeling and data exchange capabilities.
• Bricsys: Bricsys (a Hexagon company) develops BricsCAD, a DWG-based CAD platform that competes with Open Cascade's CAD Builder in the cost-sensitive CAD market, particularly for AEC and mechanical design SMB and enterprise segments.
• Siemens Digital Industries Software: Siemens develops the Parasolid geometric kernel and NX CAD platform — both directly competitive with OCCT for embedded modeling and full CAD systems. Parasolid Import is itself sold as one of Open Cascade's commercial components, underscoring the dual competitor/partner relationship.

Direct peers

• Tech Soft 3D: Tech Soft 3D provides 3D development toolkits (HOOPS Exchange, HOOPS Visualize, HOOPS Communicator) used by engineering software developers. Directly comparable to Open Cascade as a developer-facing 3D SDK provider serving CAD/CAM/CAE integrators with similar data exchange and visualization use cases.

Emerging players

• Kubotek USA (formerly TransMagic): Kubotek USA offers 3D data exchange and CAD interoperability software (Kubotek Kosmos, formerly TransMagic products) directly competing with Open Cascade's data exchange components (IFC, JT, ACIS, Parasolid, DXF importers) and CAD Processor for healing/simplification/conversion.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/open_cascade
• YouTubeyoutube.com/channel/UCO6fnQhuib2WjMZwB-lxIwA
• Facebookfacebook.com/OpenCascade
• LinkedInlinkedin.com/company/open-cascade

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Open Cascade