Model-based systems engineering with Enterprise Architect and LemonTree

Models help you keep track of your systems development

The benefits of models in the development of systems are clear

  • Basis for discussion – The model serves as a basis for discussion for all subject experts and developers involved
  • Documentation – The model automatically creates a consistent system documentation
  • Traceability – Changes to the model can be traced and tracked at any time
  • Abstraction Levels – Models can be executed in different levels of detail, as required
  • Functional Safety Management – Models are ideally suited to comprehensively implement functional safety requirements

LieberLieber EXPERTISE

LieberLieber has developed customer-specific models for decades and therefore possesses excellent know-how.

Systems Engineering is one of our main areas of competence. We offer:

  • Profound knowledge of development languages such as UML and SysML.
  • AUTOSAR modeling with Enterprise Architect
  • Implementation of Functional Safety Requirements in accordance with industry standards via Enterprise Architect, UML and more.
  • Code generation and traceabilty
  • Model validation ensures adherence to modeling methodology
Functional Safety Management with Enterprise Architect

Configuration Management: The most important Use Cases

MBSE Extensions for Enterprise Architect

The Systems Modeling Toolbox (SYSMOD) is a pragmatic approach by Tim Weilkiens to model the requirements and the system architecture of a system. It provides a toolbox of tasks with input and output work products, guidelines and best practices. SYSMOD uses the OMG Systems Modeling Language (OMG SysML), but could also be used with other languages. Learn more about SYSMOD

Download SYSMOD© MDG Technology for Enterprise Architect 14 here:

Our product LemonTree

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


News in model-based systems engineering

LieberLieber: New Release – LemonTree 4.0

With version 4.0, the LemonTree family now has a completely new user interface as well as innovations for web-based reviews and continuous integration. The new user interface has been optimised for user friendliness and feedback and offers a 4K resolution for even...

Presentation at Mesconf 2023

Philipp Kalenda presented a comprehensive scenario at Mesconf in his one-hour talk "Requirements & Architecture: Managing Traces in a model-based Build Pipeline" including the recently introduced LemonTree family (see graphic). The interest was very high and there...

LieberLieber Software: LemonTree becomes family

LieberLieber launched its product LemonTree more than six years ago. As the demand expanded more and more, LemonTree has become a product family in the meantime. An important part of this is the LemonTree.Connect product group, which connects various ALM systems with...

LieberLieber Software: Whitepaper LemonTree.Automation

How to successfully work with LemonTree.Components and LemonTree.Automation in a build pipeline using version control This white paper describes how to integrate LemonTree.Components and LemonTree.Automation into a DevOps process to efficiently manage the lifecycle of...

LieberLieber: Webasto moves into the future with MBSE

The Webasto Group, a family-owned German automotive supplier, generated 3.7 billion euros in sales in 2021 with around 15,700 employees, making it one of the 100 largest suppliers worldwide. The group has been implementing MBSE for about two years and relies on...

LieberLieber Software: Cooperation with ACTL Systems in Israel

LieberLieber has recently started a cooperation in Israel with ACTL Systems, one of the leading Israeli companies in the field of software development methodology. The team, which currently consists of seven people, specializes in consulting and training in the field...

LieberLieber: Agriculture is going digital

In 2021, the German agricultural engineering family group CLAAS generated sales of 4.8 billion euros with around 11,900 employees. Within the group, CLAAS E-Systems is responsible for the development of electrical and electronic systems for agricultural machinery....

LieberLieber Software: LemonTree 3.3

Simultaneously with the release of Enterprise Architect 16, LieberLieber presents LemonTree 3.3 to ensure full compatibility with the widely used modelling platform. In addition, LemonTree.Automation, a special solution for use in a tool chain, is now available....

Whitepaper: Is suitable versioning possible at all?

In our everyday practice of model-based systems engineering in various branches of industry, we repeatedly encounter the question of precise and easy-to-handle versioning of models. This question is becoming increasingly important due to legal regulations, stricter safety regulations and the significant increase in product variants.

LemonTree as a Swiss pocket knife for models

For about 20 years, the volunteer team of the open source project railML has been working on the standardisation and simplification of data exchange in the railway sector. In 2022, the work carried out is to be officially recognised and thus become binding by being recorded as ISO/TS 4398:2022 „RailDax“. The team has been using Enterprise Architect for several years, and recently also LemonTree, which is already referred to there as the Swiss pocket knife for models.

What customers are saying

Hirschmann Car Communication
As a leading manufacturer, we want to introduce such disruptive technologies as quickly as possible, even if they change the current way of doing business. In our field, technical advancement gives us a key competitive edge that distinguishes us from our competitors. We must always be ready to enter new territory.


Thomas Adam
Head of Technology & Innovation, Hirschmann Car Communication

Hilti Power Tools
When implementing other code generators, these requirements were not fulfilled. Therefore, it soon became clear that the approach of LieberLieber was very practical and promising for us. Since during code generation activity diagrams and state machines play the greater roles, the internal learning curve can be reduced to one week. After this time, our developers can already model on their own and generate runnable code – another very positive surprise.


Dr.-Ing. Michael Fuchs
Software, electronics & drives

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
Founder and CEO at Petwalk Solutions

Customer Success Stories


Hirschmann Car Communication is a leading German supplier of transmitter and receiver systems. The company has long based its systems development on Enterprise Architect. Now, in a preliminary project for a remote tuner, LieberLieber Embedded Engineer is being used to generate executable source code from their UML system model.


Following exhaustive tests, the renowned construction industry supplier Hilti decided on LieberLieber’s uml2code Code Generator for Embedded Systems for Enterprise Architect.


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.

Profit from the LieberLieber

With us, customers get everything they need for model-based software and system development from a single source: in-depth consulting, careful assessment of requirements, creation of individual tools, integration into the existing tool chain, customized training and ongoing support.

  • Everything from a single source
  • More efficiency in your modeling team
  • Integration into your infrastructure
  • Plug & Play products
  • Top training & support


We share our knowledge with you.

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We are tool development specialists.

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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

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