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.

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.

learn more


We are tool development specialists.

learn more


We ensure smooth tool interaction.

learn more

Training & Support

We give you advice and support.

learn more

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!



Continuous Integration with Enterprise Architect

INTERACTION OF LEMONTREE, GIT,PROCLOUDSERVER AND PROLABORATE 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...

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...

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,...

Models play a central role at VW

Model-based systems engineering is now used in many areas of the VW Group. In a joint webinar, Daniel Siegl (LieberLieber) and Hermann Gollwitzer (VW) explained the background to this and the role LieberLieber plays in implementing this fundamental change in...

LieberLieber Software: EU research project on cyber security

The EU research project VALU3S aims to reduce the development effort of automated systems with regard to security, cyber-security and privacy requirements. To this end, 41 partners from 10 countries are working together. Over the next three years, LieberLieber...

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 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!

Tag des Systems Engineering

10.-12.11, 2021

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