Ratio CASE

What Ratio CASE does

Ratio CASE (legally Ratio Innovations B.V.) is a Netherlands-based, founder-owned consultancy and tooling company operating from the Klokgebouw building in Eindhoven. Founded in 2017 by Tim Wilschut and Tiemen Schuijbroek, both affiliated with the Eindhoven University of Technology, the company provides Model-Based Systems Engineering (MBSE) services and software to organizations that need to specify, visualize, analyze, and optimize complex system architectures.

The company's product suite is anchored by the proprietary Elephant Specification Language (ESL), a formal, human-readable language for writing system specifications that automatically derives system architecture models and engineering documents. ESL is supported by RaESL, a Python package distributed via pip providing compilation, documentation generation, Jupyter kernel, syntax highlighting, and language server functionality. The companion RaGraph Python library enables graph creation, manipulation, clustering, sequencing, and Dependency Structure Matrix (DSM) visualization, with continuous release cadence through v1.24.1 in May 2026. Distribution is hybrid: open-source components on GitLab and PyPI for self-serve developer adoption, plus a web-based RaGraph Launcher with authentication and role-based access control for managed enterprise use. CASE Guide serves as the central documentation and governance portal.

Ratio CASE generates revenue through professional services engagements (systems modelling and analysis workshops, ESL training, systems engineering consultancy, and brownfield architecture analysis) sold via direct, quote-based engagements to enterprise, government, and academic clients. Reference customers include the Dutch Institute For Energy Research (DIFFER), Rijkswaterstaat (Dutch Ministry of Infrastructure), and Eindhoven University of Technology, with key partners including DEMCON TSST, VDL ETG, TU Delft, University of Antwerp, Ghent University, and Materials Innovation Institute (M2i). No external funding rounds have been disclosed.

Name

Ratio CASE

Legal name

Ratio Innovations B.V.

Website

https://ratio-case.nl

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Ratio CASE is a Netherlands-based consultancy and open-source tooling provider specializing in Model-Based Systems Engineering, offering the proprietary Elephant Specification Language, RaGraph Python library, and related software alongside systems-engineering consulting to government, research, and high-tech clients.

Ownership category

akta.pro rank

Product category

Systems Engineering Software

NAICS

Custom Computer Programming Services (541511), Computer Systems Design Services (541512), Management Consulting Services (54161), Computer Systems Design and Related Services (54151)

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Services-Engineering, Accounting, Research, Management (8700), Services-Management Consulting Services (8742)

akta.pro primary industry

iBPMS (Intelligent BPM Suites) & Process Automation Suites (HDAEAHAG)

akta.pro secondary industry

Business Rules Management Systems (BRMS) & Decision Automation (HDAEAHAE)

Keywords

• Model-Based Systems Engineering
• Systems Engineering Tools
• System Architecture Analysis
• Dependency Structure Matrix
• Requirements Management

Headquarters

HQ city

Eindhoven

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Systems Engineering Consulting Services: Professional consulting services including systems modelling and analysis workshops, ESL training, systems engineering support and consultancy engagements.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Ratio CASE provides Model-Based Systems Engineering (MBSE) consulting services supported by proprietary and open-source tools. Their core offering centers on the Elephant Specification Language (ESL) for writing structured system specifications and the RaGraph Python library for dependency analysis and DSM visualization. They deliver systems modelling workshops, ESL training, and architecture consultancy engagements to organizations facing system complexity challenges.

Product overview

Ratio CASE offers a suite of Model-Based Systems Engineering tools centered around the Elephant Specification Language (ESL) and RaGraph. ESL is a formal language for writing system specifications, while RaGraph is a Python library for graph analysis and visualization. Supporting tools include RaESL (Python package for ESL), the CASE Guide documentation platform, and RaGraph Launcher (web-based environment). The open-source tools are available on GitLab with MIT/Apache-2.0 (ESL) and GPL-v3.0 (analysis) licenses.

Differentiator

Problem solved

Functional benefit

Brands

• RaESL: Python support package for the Elephant Specification Language (ESL), installable via pip for Python >=3.11.
• RaGraph
• Elephant Specification Language (ESL)

Quantifiable outcome

• Reduces downstream integration issues through modular architecture design
• +1 more outcomes

Named customers3 records

Segments1 record

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and major.

• DEMCON TSSTcoreStrategic or Co-development PartnerRealizing the back-bone of the PLD4Energy research cluster development for DIFFER, handling the core instrumentation and system integration.
• DIFFER (Dutch Institute For Energy Research)coreStrategic or Co-development PartnerCommissioned the PLD4Energy project for developing state-of-the-art pulsed-laser deposition research cluster for energy applications.
• Eindhoven University of TechnologycoreStrategic or Co-development PartnerAcademic partner for SMART*Light project developing table-top synchrotron technology; also alma mater of company founders.
• TU DelftmajorStrategic or Co-development PartnerCollaborating on SMART*Light project for coherent high-brightness X-rays development.
• University of AntwerpmajorStrategic or Co-development PartnerAcademic consortium partner for SMART*Light synchrotron development project.
• Ghent UniversitymajorStrategic or Co-development PartnerAcademic consortium partner for SMART*Light synchrotron development project.
• Materials Innovation Institute (M2i)majorStrategic or Co-development PartnerResearch institute partner in SMART*Light project consortium.
• VDL ETG Technology & Development B.V.coreStrategic or Co-development PartnerTechnology development partner for SMART*Light project handling key technical components.
• RijkswaterstaatcoreStrategic or Co-development PartnerExecutive branch of Dutch Ministry of Infrastructure and Environment. Client for MultiWaterwerk navigation lock product platform development. RaGraph includes GRIP I/O integration for Rijkswaterstaat's project management software.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Jama Software (Jama Connect): Jama Connect is a dedicated requirements and system architecture management platform. It directly competes with the requirements-management and architecture-traceability capabilities that Ratio CASE delivers via ESL and RaGraph.

Emerging players

• Intercax: Intercax builds MBSE plugins and SysML modeling tools (e.g., Syndeia) that integrate PLM and systems engineering platforms. It is a smaller specialist comparable to Ratio CASE in offering MBSE methodology and tooling to enterprise systems teams.
• Intland Software (codeBeamer): codeBeamer is an ALM and requirements management platform with MBSE capabilities, comparable in scope (and target customer profile) to Ratio CASE's combined ESL + RaGraph offering for engineering organizations.
• Visure Solutions: Visure Solutions offers a requirements management and ALM platform focused on safety-critical and regulated industries. It competes in the same requirements-and-traceability slice of MBSE that ESL targets.
• Modern Requirements (Modern Requirements4DevOps): Modern Requirements provides a requirements management suite for Azure DevOps and TFS, serving the same systems engineering / requirements traceability use case that Ratio CASE's ESL specification language addresses.
• Modelon: Modelon provides system modeling and simulation libraries (Modelica-based) for Model-Based Systems Engineering, addressing similar architectural modeling and analysis problems to Ratio CASE's RaGraph and ESL stack.

Broad incumbents

• PTC (Windchill, Creo): PTC's Windchill and Creo product lines address PLM and systems engineering at large manufacturers, making it a broad incumbent adjacent to Ratio CASE's product family and architecture work.
• Dassault Systèmes (3DEXPERIENCE, CATIA Magic): Dassault's 3DEXPERIENCE platform and the CATIA Magic / No Magic Cameo suite cover MBSE, SysML modeling, and product family engineering, overlapping Ratio CASE's system-architecting and product-platform value proposition.
• Siemens Digital Industries Software: Siemens sells Polarion ALM and Teamcenter, dominant MBSE/ALM/PLM suites used by large engineering organizations. It is the broadest incumbent in the same category as Ratio CASE, with much greater scale and integrated tooling.
• IBM Engineering (Rhapsody, ELM): IBM's Rhapsody and Engineering Lifecycle Management suite are core MBSE/requirements tools for systems engineering teams, directly overlapping Ratio CASE's ESL-and-DSM workflow at the enterprise tier.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/ratiocase
• GitHubgitlab.com/ratio-case-os

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Ratio CASE