MODELING INFRASTRUCTURE

LieberLieber’s vast project experience has resulted in an effective method for creating modeling infrastructures that meet even the most complex requirements.

The optimal use of modeling for your company is ensured by targeted design, adaptation and expansion of your infrastructure.

  • Use your existing infrastructure
  • Create an adaptation concept
  • Work efficiently even in distributed teams
  • Product line development for modeling
  • Re-use of established versioning concepts for models
  • Fulfillment of the ISO 26262 standard

LieberLieber EXPERTISE

LieberLieber has experience with a wide variety of infrastructures and is familiar with transforming them into a productive modeling environment. In doing so, we carry over the specifications and internal processes of your company, for example with regard to versioning, variant management or product line development. We align our strategy and the tools used to seamlessly integrate modeling into the existing setting. Because we realize that newly-added modeling tools should not dictate the processes, but must of course adapt to them.

Model Versioning for Product Line Engineering:

Model Versioning and Enterprise Architect:

Configuration Management: The most important Use Cases

Our product in your modeling infrastructure

Special requirements on software and systems development often arise in a modern modeling infrastructure when development is handled in distributed teams. A central aspect is the merging of parallel model versions (Diff & Merge). This is one of our key areas of specialization:

  • Comparison and merging of Enterprise Architect models
  • Parallel editing of models via optimistic model versioning
  • Seamless integration in Subversion, Git, PTC or other VCS
  • Model branches
  • Changes are shown clearly and intuitively (incl. Merge Preview)
  • Review function for calculated changes

LemonTree

News in Modeling Infrastructure

Webinar: From System Design to Digital Twins

Together with our partners TwinTech and Fraunhofer IESE, we cordially invite you to attend the webinar ‘From System Design to Digital Twins: Generating Asset Administration Shells from Enterprise Architect models’ on Monday, 9 March 2026 (3:00 p.m. – 4:00 p.m.)....

LieberLieber: Partners as multipliers

LieberLieber partners from Japan, Italy, Scotland, Germany and Austria recently met for an exclusive three-day training course in Vienna. The course presented the latest developments relating to LemonTree and provided practical insights into day-to-day work with MBSE...

LieberLieber: Integrating safety and security with MBSE

At SafeSec Day 2025, organised jointly by TÜV Akademie Austria and msg Plaut Austria, Markus Benedikt from LieberLieber held a workshop explaining the integration of safety and security standards in model versioning with LemonTree, using practical examples. In his...

LieberLieber: Digital twins for the automated control of a microgrid

The control of a microgrid is being optimised in the EU project MATISSE through model-based development of digital twins. LieberLieber is part of the European research project MATISSE, which aims to develop ‘model-based digital twins for the early verification and...

Better conflict resolution in model versioning through AI

Picture: Dr Konrad Wieland and the scientific partners at MODELS 2024 in Linz The presentation at MODELS 2025 will examine how large language models (LLMs; a form of artificial intelligence) can improve model versioning workflows with LemonTree by supporting conflict...

WEBINAR: The Digital Red Thread – From PDF Requirements to Version-Controlled Models in Enterprise Architect

Requirements modelling is used to visually represent system requirements. It helps everyone involved to understand the functions of a system and acts as an intermediary between the specialist and technical teams involved in development. Requirements often start out as...

LieberLieber: Mastering versions and variants

A uniform approach to complex systems engineering Versioning and variant handling are indispensable in the engineering of complex systems in order to ensure quality, efficiency and traceability and to effectively overcome the challenges of complexity and diversity....

Prostep ivip Symposium 2025: Great interest in LemonTree.Connect, digital twins and SysML v2

From 13 - 14 May 2025, the Prostep ivip Symposium took place at the Berlin Congress Centre. LieberLieber shared a stand there with its sister company Sparx Systems Europe and was delighted by the great interest in LemonTree.Connect and topics such as digital twins and...

LieberLieber: ISO 27001 certification has been confirmed

Following our ‘ISO/IEC 27001:2022’ certification last year, the result has now been confirmed for another year after a two-day audit. ISO 27001 is an information security management system that emphasises risk management in particular. It is valid for three years, but...

LieberLieber: Sponsor of the INCOSE Healthcare Conference

LieberLieber: Sponsor of the INCOSE Healthcare Conference Model-based systems engineering (MBSE) is also attracting increasing interest in medical technology As a specialist in model-based systems engineering (MBSE), LieberLieber already counts a number of well-known...

WHAT CUSTOMERS ARE SAYING

Preh Car Connect
As our company continues to see strong growth and the implementation of numerous series projects, we can effectively use components of our own software again and again. So far, however, this has only been possible through the laborious manual copying of software architecture models. Together with LieberLieber, we are now working on a project that will automate such processes. LemonTree is an important building block for us in order to be able to implement these development steps faster and more easily.

Tim Michaelis
Software architect at Preh Car Connect

Petwalk
LieberLieber’s approach is very pragmatic: You can continue to use existing software and still switch to a model-based approach when it makes sense. This makes it much easier for us to decide on the fly whether or not to take this step. This also allow us to intensify our cooperation with LieberLieber on an ongoing basis, trying out new things over and over again.

Klaus Kindl
Gründer und Geschäftsführer von Petwalk Solutions

HIMA Paul Hildebrandt GmbH
“In general, standards such as IEC 61508 demand the application of configuration management. This refers to all artifacts, including UML models. LemonTree from LieberLieber is our key to revealing the changes that have been made to a revision.”

Dipl.-Ing. (FH) Stefan Müller
HIMA Paul Hildebrandt GmbH, Safety-related automation solutions

Customer Success Stories

Petwalk

Petwalk, the Austrian specialist for automatic dog and cat doors, is on an expansion course. In order to meet the strict safety regulations required for access to the American market, the company sought the support of LieberLieber. Together, they are now developing a model-based solution that demonstrably meets all safety regulations.

Preh

The rapidly-growing automotive supplier Preh Car Connect GmbH is re-establishing its software development on the Product Family Engineering methodology. Preh engineers, already longtime Enterprise Architect users, were recently introduced to LemonTree from LieberLieber. The new concept was unveiled in a joint presentation and is nothing short of ambitious.

HIMA

The global leader in smart industrial security solutions, HIMA has used of Enterprise Architect since 2012. It was during a training course that HIMA became aware of LemonTree and recognized the great potential it holds for the versioning of EA models. Before long, a joint effort had been mounted to develop specific enhancements to LemonTree in order to satisfy HIMA’s stringent requirements on “smart safety”.

PROFITIEREN SIE VOM LieberLieber
360°-PRINZIP

Bei uns bekommen Kunden rund um die modellbasierte Software- und Systementwicklung alles aus einer Hand: fundierte Beratung, sorgfältige Erhebung der Anforderungen, Erstellung individueller Werkzeuge, Integration in die bestehende Werkzeugkette, maßgeschneidertes Training und laufenden Support.

LieberLieber – Modelle sind unsere Welt!

  • Alles aus einer Hand
  • Mehr Effizienz in Ihrem Modellierungsteam
  • Integration in Ihre Infrastruktur
  • Plug-and-Play-Produkte
  • Top Training & Support

Consulting

We share our knowledge with you.

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Tools

We are tool development specialists.

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Integration

We ensure smooth tool interaction.

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Training & Support

We give you advice and support.

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Contact LieberLieber!

by phone under +43 662 90 600 2017 

Contact us today

LieberLieber Software GmbH
Gumpendorfer Straße 19
1060 Wien, Austria
+43 662 90600 2017
welcome@lieberlieber.com

LieberLieber Software Corp
2800 Post Oak Blvd., Suite 4100
Houston, TX 77056
+1 832-390-2461
office@lieberlieber.us