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.). More …

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. More …

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. More

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!



Modeling based on Feature-Branches, SWISSED 2020

SWISSED20 was the 7th annual symposium of the Swiss Society of Systems Engineering (SSSE). SSSE acts as the Swiss Chapter of the International Council on Systems Engineering (INCOSE). This one-day event brings together first-class presenters and practitioners, to...

Development of a domain-specific language for modeling component versions and their dependencies

The "13th Symposium Virtual Vehicle" took place from September 1.- 2., 2020 in Graz. The event focused on new trends, methods and tools for: model-based systems engineering, engineering of automation and agile processes, availability / traceability / analytics....

In memory of Jan Van Oort

It is with great regret that we announce the death of Jan van Oort, who recently died of heart failure in Peru. Jan was a coach at SparxSystems Central Europe for many years before co-founding the start-up KIVU in 2016. Of course, he also brought Enterprise Architect...

SparxSystems Central Europe Webinar: “Modeling NATO Architecture Framework with Sparx Enterprise Architect”

10 June 2020, 11.00 - 12.00 h Speaker: Christian Freihoff, German Federal Armed Forces Beat Lang, Swiss Army Peter Lieber, SparxSystems Central EuropeThe NATO Framework NAFv4 will be presented in the webinar. As a real application scenario you will experience the...

Live-Webinar: June 17, 2020

Configuration Management in MBSE Agile Versioning as key technology for successful safety projects of distributed teamsConfiguration Management in MBSE June 17, 2020 – 15:00Dr. Horst Kargl (SparxSystems CE) & Daniel SieglEnglish, No participation feeModel-driven...

Live-Webinar: May 27, 2020 – 15:00

Generate Misra-compliant C/C++ code to enhance traceability from your requirements to your source code using Embedded Engineer 3.0

Even more effective with new structure

In the course of the restructuring of the Peter Lieber group of companies, LieberLieber Software also made some changes in order to be able to serve its customers even more effectively and efficiently. The management is now in the hands of Dr. Konrad Wieland, who has...

Webinar, April 2 2020, 3 – 4 pm

Best Practice Webinar: Agile modeling on individual development paths (Branches) Model-based system development (MBSE) covers the entire system development cycle from design to validation and is made mandatory by standards and guidelines, for example in the field of...

Infineon relies on LemonTree

At Infineon's Munich location, the company relies on model-driven development with Enterprise Architect. In addition, the advantages of LieberLieber LemonTree were also recognized in order to be able to merge the models created directly in Git into different feature...

Emerasoft distributes LemonTree in Italy

As a consequence of the great demand, LieberLieber LemonTree is conquering the Italian market with the support of a local partner. Together with Profesia, the Turin-based software specialist Emerasoft is an important partner of Sparx Systems (Enterprise Architect) in...

embedded world 2020

At the embedded world 2020, LieberLieber Software will present the latest release of LemonTree as well as the codeBeamer ALM - Enterprise Architect Integration 2.0, developed in cooperation with Intland Software. Vienna/Nuremberg, February 19, 2020, embedded world –...

LemonTree 2.5

As part of the ongoing development of its plug-and-play product for model versioning, LieberLieber recently introduced LemonTree 2.5. For even easier handling, the tool is now directly integrated into Enterprise Architect and supports basic Git functions. In addition,...

Advanced Integration for Systems Engineering

Intland Software, developer of the market-leading codeBeamer Application Lifecycle Management (ALM) solution and LieberLieber Software, specialist for the widely used modeling platform Sparx Systems Enterprise Architect further strengthen their successful partnership with this step.

LieberLieber and Sparx Systems Central Europe at embedded world 2019

Visit LieberLieber and SparxSystems Central Europe at the joint booth (Hall 4, Booth 141) at embedded world (February 26-28, 2019, Nuremberg).

LieberLieber Software: Replacing documents with models

In a department of a leading German automotive supplier, model-based software development is now being implemented to its fullest. This trend-setting move away from a traditional, document-centered method was only made possible by the use of...

LieberLieber Software: LemonTree for successful Change Management implementation

Functional safety standards such as ISO 26262 also require configuration and change management in models. LemonTree is used for this purpose in the software development of a leading German automotive supplier. The tool’s user-friendly features...

LieberLieber Software: LemonTree 2.0

LieberLieber’s LemonTree is a revolutionary development tool used to combine different model versions, especially popular with developers of safety-critical applications. Its Version 2.0 extends both the features and the license model, all based...

LieberLieber draws on AIT´s safety & security co-engineering

LieberLieber, Austrian specialist in model-based systems development, expands into the Canadian automotive market. Vienna (OTS) - Increasingly complex networking and digitalisation demand new approaches for the efficient development of software systems. New...

LieberLieber Software: Volkswagen accelerates with Enterprise Architect

Volkswagen relies on Enterprise Architect along with bespoke LieberLieber modeling assistants to clearly and precisely communicate its requirements on infotainment software and systems development to its suppliers, and can now move ahead with...

LieberLieber Software: HIMA Meets Tough Standards with LemonTree

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....

LieberLieber Software: LemonTree for Product Family Engineering

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 Software: PiCar as model for Industry 4.0

The team of researchers working on LieberLieber’s collaboration with CDL (Christian Doppler Laboratory of TU Wien) presented its first case study in the form of a mobile robot. The core of development is focused on targeted data reduction that allows the...

LieberLieber Software: Next-generation doors for cats and dogs

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...

LieberLieber Software: Hirschmann makes waves with Embedded Engineer

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...

LieberLieber Software: From Data Streams to Models

After completing its first project with a Christian Doppler Laboratory (CDL) at the end of 2016, LieberLieber is now continuing this commitment. Together they seek ways to transform live data streams directly into models within the framework of industry...

LieberLieber Software: LemonTree 1.3 with optimized performance

Building on healthy demand, LieberLieber LemonTree is now poised to conquer the Japanese market with the support of a key local partner. Meanwhile, the latest Release 1.3 brings even more improvements in speed and stability. LieberLieber’s product...

LieberLieber Software: Coordinator for EUROSTARS project

LieberLieber Software is heading a new European initiative to lower the maintenance costs of highly-available safety-critical software systems. Following smaller precursor projects, a consortium headed by LieberLieber has now started to develop a...

LieberLieber Software + SparxSystems CE: Together at embedded world 2017

LieberLieber Software and SparxSystems Central Europe will be presenting exciting innovations in model-based software development at their joint stand #449 in hall 4 at embedded world 2017. The newest highlights: Enterprise Architect 13 and LieberLieber...

Fresh Model Versioning with LemonTree

After many years of supporting a number of organizations in handling their model versioning challenges, LieberLieber has now released its new model-based versioning tool as a standard solution. LemonTree is a combination of scientific and practical...

Package Solution for International Courier

Recently, LieberLieber was handed the challenge by a global logistics company to develop platform-independent software to support over ten thousand of their employees in the field. The software, continually extended and upgraded, is deployed on special...

LieberLieber LIVE

13th Graz Symposium Virtual Vehicle

1.- 2. September 2020

SWISSED 2020 (live and online) in Zurich

16. September 2020


17. September 2020

Tag des Systems Engineering 2020 Online

18. – 20. November 2020

Embedded Software Engineering Congress

Online, 30.11. – 4.12. 2020

Contact us today!

via Telephone: +43 662 90600 2017

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

LieberLieber Software s.r.o.
Bratislavská 264
Kúty 90801
SVK - Slovensko