LieberLieber: Your Enterprise Architect specialist

LieberLieber is the skilled Enterprise Architect (Sparx Systems) specialist with decades of experience in the development of customer-specific models. Our LemonTree and Embedded Engineer extensions make working with models faster and more efficient. We focus on three main areas of expertise:

Model-Based Systems Engineering

Modern electronic systems have to fulfill more and more requirements and therefore often become very complex. For decades, a proven means for reducing this complexity has been the use of models (architecture, mechanical engineering, etc.).

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Modeling Infrastructure

Any company’s established IT infrastructure can be adapted for efficient modeling. It is essential to make the best possible use of existing structures and available data when creating an interactive working environment for modeling teams.

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Integration with Enterprise Architect

Modern IT solutions utilize data originating from many sources. The best and most efficient way to handle this diversity is with a model-based approach. Our years of experience have provided us with the know-how required to connect such data sources to Enterprise Architect in the best possible way.

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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About us

Founded as a software development company in 1996, LieberLieber Software has become a single source of competence in model-based engineering focusing on extensions for Enterprise Architect (Sparx Systems) as well as customizations for a wide variety of industrial and application areas.


LieberLieber is actively involved with partners and committees from industry, research and standards organizations. In this way we can be sure that you always get state-of-the-art solutions from us that you can rely on!



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...

2. MBSE Summit in Traunkirchen, 5. – 6. June 2023

After last year's great success, LieberLieber is organising the MBSE Summit for the second time from 5 - 6 June 2023. The venue will again be the "Internationale Akademie Traunkirchen" (Traunsee/Upper Austria), which has proven to be a great place for in-depth...

MedConf 2023: Our offer for medical technology

The MedConf - Software and Device Development in Medical Technology will take place from 23 - 25 May 2023 in Munich Unterhaching as an attendance event. LieberLieber and SparxSystems CE are exhibitors and speakers for the first time at this conference, which has...

WEBINAR AUTOSAR-UML Bridge by IncQuery for Maximizing System Design Efficiency

LieberLieber and IncQuery have a long-standing partnership around model-based development with Enterprise Architect and LemonTree. This collaboration has now resulted in the AUTOSAR-UML Bridge by IncQuery, a powerful solution for bridging the gap between AUTOSAR and...

Visit to NASA’s JPL

Alex Schölzhorn and Daniel Siegl recently visited our customer, NASA's JPL laboratory in Pasadena, California. The Jet Propulsion Laboratory (JPL) controls and builds satellites and space probes for NASA. It is part of the California Institute of Technology (Caltech)...

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...

Webinar: Polarion Connector for Enterprise Architect

LieberLieber Software and Siemens present their Polarion ALM - Enterprise Architect integration. This state-of-the-art integration is based on the latest technology and brings important updates for users of both systems.  Siemens, developer of the market-leading...

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 Software: DevOps for MBSE at Bosch

At the Prostep ivip Symposium 2022, Florian Beer (Bosch, Engineering Driving Systems) and Daniel Siegl presented their joint project to realise DevOps for MBSE at Bosch Driving Systems. In the presentation, they showed how such a DevOps solution for models can be...

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: Facilitating SysML data exchange

If Model-Based Systems Engineering (MBSE) is to become widely accepted in industry, the free exchange of MBSE data (language: SysML) between different tools must function smoothly. Therefore, LieberLieber is actively working on this task both in Prostep ivip and...

LieberLieber Software: Cooperation with msg Plaut

LieberLieber has recently started a cooperation with msg Plaut, a group of companies with headquarter in Vienna. The cooperation is focused on modelling with Enterprise Architect in the automotive sector, as the demand for model-based solutions continues to grow...

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....

LieberLieber Software: 1st MBSE Summit 2022 at Traunkirchen in Upper Austria

Together with the Johannes Kepler University Linz (CDL-MINT), LieberLieber is organising the 1st MBSE Summit at the International Academy Traunkirchen on 23 and 24 June 2022. The aim is to bring together the German-speaking community in the field of Model-Based...

Webinar: SysML-Light with Enterprise Architect (German)

7.3.2022, 13:00 – free participation
The ballast-free and practical introduction to Model-Based Systems Engineering
Many organisations find it difficult to get started with MBSE using SysML. Among other things, they are faced with the challenge of having to decide how to tailor the general modelling language SysML with its 9 diagram types and many model elements to the project-specific needs. After all, not all diagram types and model elements should be used.

Webinar Agile MBSE: Thursday 10.3.2022, 14:00 – 14:45, LieberLieber Software + Nanga Systems

A constantly and ever faster changing world requires new working methods and tools in Systems Engineering. For this reason, there has been a shift towards Model Based System Engineering (MBSE) for quite some time. However, especially in agile settings, there are many detailed issues to be resolved in the development process to meet the required traceability and other conditions.

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.

Continuous Integration with Enterprise Architect

In the course of the increasingly agile orientation in software development, our customers ask us again and again whether modelling and agility go well together. Our opinion on this is quite clear and has also been proven in various studies: Only with properly applied modelling can agile processes be implemented at all in the face of increasing complexity, if you also want to document all regulations and requirements in a comprehensible way.

LieberLieber Software: Partnership with Technowelle

The German startup Technowelle is a new partner of LieberLieber and will further develop Autosar Engineer, which was introduced in 2014, under the name Modsar. Technowelle’s goal is to support customers in creating innovative concepts for the development of UML architectures and AI projects.

In memory of Martin Muhr

It is with great regret that we announce the death of Martin Muhr, who was instrumental in shaping the development of the Lieber.Group for over twelve years. Martin was the Managing Director of LieberLieber for many years, where he introduced and facilitated product...

LieberLieber Software: Partnership with Parallel Agile

With LieberLieber and the Californian start-up Parallel Agile (CodeBot), two experienced Enterprise Architect modelling specialists have formed a partnership. While LemonTree was recently introduced in version 3.0, CodeBot is still very new on the market. The product...

Webinar on 26 May: Configuration Management in Enterprise Modeling

In this second webinar of the 3-webinar series of our partner Achillis Inc., you will learn configuration management techniques for incrementally approaching product family engineering from within your standard MBSE environment: what tools will be needed? what...

Webinar on May 20th: When the model is the code (and a trip to the Bahamas)

In this second webinar from LieberLieber and Parallel Agile, we’ll be discussing the management of Enterprise Architect (EA) models, and you will travel with us to the Bahamas! We’ll show you how LemonTree and Parallel Agile`s CodeBot can be used to create full stack...

Webinar 23rd June: Capabilities needed for modern MBSE

The development of cyber-physical systems, especially in the automotive industry, is evolving and this trend is now seen across many diverse product markets. E-Mobility, automated or autonomous driving,  innovative and highly networked IoT technologies are leading to...

LemonTree 3.0 – Live Demo of Reusable Model Components

LieberLieber specialists show you live the new features and benefits of LemonTree 3.0! Tuesday 27. April 2021, 02:00 PM (Vienna, Austria).

LemonTree 3.0

When LieberLieber launched its product LemonTree four and a half years ago, its success story was not yet foreseeable. However, as the trends in software and system development continued to intensify, LemonTree 3.0 now opens up completely new possibilities for product...

LieberLieber Software: SDC Systems distributes LemonTree in the UK

With the new partner SDC Systems LieberLieber strengthens its distribution in the UK and Ireland. SDC Systems has a large base of Enterprise Architect users and includes LemonTree and codeBeamer Connector for Enterprise Architect in its portfolio.Vienna/Hertfordshire...

LieberLieber Software: NATO relies on Enterprise Architecture

With the aim of modernising its business and IT landscape, NATO is relying on the recently introduced NAFv4 framework. The German Bundeswehr and the Swiss Army have chosen Enterprise Architect (Sparx Systems) as their standard modelling tool to use this framework with...

Webinar – Model Management for Low Code Projects

This webinar will discuss synergy between LemonTree and Parallel Agile CodeBot® to intelligently manage Enterprise Architect (EA) SysML/UML models for large teams of developers working in parallel. CodeBot is a full stack application generator that creates a database,...

LieberLieber LIVE

LieberLieber Software is a specialist for model-based software and system development and regularly presents itself at various events. Our event calendar will help you to plan your meeting with us well in advance. So pick your preferred date and visit us right away. We are looking forward to meeting you!



MBSE Summit 2023


33rd Annual INCOSE International Symposium


Contact LieberLieber!

by phone under +43 662 90 600 2017 

Contact us today

LieberLieber Software GmbH
Handelskai 340, Top 5
1020 Wien, Austria
+43 662 90600 2017

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