Our team

We believe that it is possible to make working with chemicals safe and easy.
That’s why we work every day to simplify processes and create solutions you can rely on.

True to our motto:
Safe chemistry. Safe work. Simple. Safe.

Our vision

Safe chemistry. Safe work. Simple. Safe.

Our vision is to create a working environment in which chemistry and work go hand in hand.
Through our software, we offer reliable safety data sheets, effective hazardous substance management and reliable risk assessments that our customers can rely on.
Together we strive to minimize risks and maximize safety.

Our drive

We live change.

Our drive is to continuously expand and improve our software.
We achieve this by combining software with first-class technical support and an update guarantee.
GeSi³ and SDBcheck® are the products that embody this approach.

That is why we
100%
Team spirit
35+
Years Average age
15+
Team events / year
6.000+
Tea bags / year
That is why we
100%
Team spirit
35+
Years Average age
15+
Team events / year
6.000+
Tea bags / year

The GeSi³ team

These are our experts

GeSi is supported by experienced experts and specialists from various fields.
From software development to customer support, we are at your side with our concentrated expertise to meet your requirements in the best possible way.

Petra Feitsch

Managing Director
GeSi Software GmbH

Dr. Dieter Feitsch

Head of Software Development
GeSi Software GmbH

Elmar Baumann

Developer
GeSi Software GmbH

Eric Kraußer

Developer
GeSi Software GmbH

Philip Stefl

Regulatory compliance expert
GeSi Software GmbH

Benedikt Lang

Developer
GeSi Software GmbH

Benedikt Schäd

Support/product training
GeSi Software GmbH

Amalia Saydullaev

Marketing Assistant
GeSi Software GmbH

Fabian Feitsch

Head of Development GeSi4
GeSi Software GmbH

Daniel Niemczyk

Developer
GeSi Software GmbH

Jörn Müller

Fachabteilung-Assistenz
GeSi Software GmbH

Our values

Professional work & first-class support

Our vision is to create a working environment in which chemistry and work go hand in hand.
Through our software, we offer reliable safety data sheets, effective hazardous substance management and reliable risk assessments that our customers can rely on.
Together we strive to minimize risks and maximize safety.

CONSTANTLY DYNAMIC

With almost 4 generations of experience, we prove our reliability and flexibility. We react agilely to legal changes and customer needs.

Helpfully close

We are in constant contact with our customers through regular support, introductions, training, webinars and our specialist conferences.

Desirably developed

Our customers are at the center of our development. We integrate their requirements and ideas into our software.

CERTAINLY KNOWLEDGEABLE & EXPERT

Our specialist knowledge and over 30 years of experience make GeSi a legally compliant tool. We share our expertise and thus make our customers knowledgeable and competent.

Safe chemistry. Safe work. Simple. Safe.

“We are passionate about simplifying: making complex laws simple for use in many companies. Contact with users is very important to us in order to make the software just right. Simple. Safe.”

Dipl. Math. Petra Feitsch, Managing Director GeSi Software GmbH

Why should you choose GeSi?

10 unbeatable GeSi arguments

Choose GeSi and benefit from an unbeatable package.
Our 3 GeSi points show why GeSi is the right choice:

1

Technical & professional support

We are at your disposal for all professional and technical questions relating to the software, as well as beyond pure operation.

2

Data transfer

We ensure that your data is transferred when versions are changed (and have been doing so for 20 years).

3

Software training

We offer training courses on the efficient use of the software or individual online training courses, because customer contact is important to us. Register here for the next training session!

4

Annual conferences

We keep your specialist knowledge up to date and offer you annual refresher courses in the form of specialist conferences.
The specialist conference for safety data sheet compilers (formulators) is also a refresher course for your specialist knowledge in accordance with REACH. Find out more here!

5

User requirements

GeSi³ has been designed and developed with the customer in mind from the very beginning.
We take your wishes and suggestions for improvement seriously and can implement them promptly in order to continuously improve GeSi³.

6

Regular updates

We regularly update the software 3 times a year according to professional, legal, ergonomic and IT aspects and rely on modern development tools and operating system independence.
Your wishes for the software are also taken into account.
You can actively help shape the software.
We integrate new technologies quickly in order to provide you with the full range of possibilities.

7

SDBcheck®

With the innovative online tool, we ensure secure safety data sheets and fast data transfer to GeSi³. SDBcheck® is continuously updated for you.

8

Transparency

We make complex calculation processes in the software, e.g. the GHS classification calculation, transparent in the form of log files so that you can follow every single step.
Our manual is always kept up to date and practical and discloses changes to the software.

9

Passion

We are passionate about chemical product safety and occupational safety and our software products help to improve and simplify legal regulations.
Delivering a high-quality product is our focus.

10

Direct accessibility

We are always there for you personally.
We can offer you fast technical and specialist help via our support team.
We do not charge you extra for our telephone support, because close contact with our customers has always been important to us.

Request your GeSi³ trial version without obligation

Test GeSi³ in full for 14 days – including support and personal introduction.

The GeSi success story

Dynamic. Helpful. Close. Since 1991.

GeSi was created from the fusion of the terms “hazardous substances” and “safety”.
The logo consists of a pictogram and a STOP sign.
It began with the development of software that supports the implementation of the Hazardous Substances Ordinance.
This idea came about as part of a study program during a BMAS-funded project in Würzburg in 1991.

GeSi’s history is characterized by continuous development and adaptation to constantly changing requirements:

2025
Introduction of SDBcheck® hazardous substance register
The SDBcheck® hazardous substance register is introduced in order to create a clear and compact hazardous substance register.
2024
10th anniversary of GeSi³
10th anniversary of GeSi³
2021
Integration of SDBcheck® in GeSi³
An interface from GeSi³ to SDBcheck® has been developed.
2019
Introduction of SDBcheck®
Introduction of SDBcheck® for the plausibility check of safety data sheets.
2018
Move to the Juliuspromenade
The move to the Juliuspromenade in Würzburg took place.
2017
Change of name to GeSi Software GmbH
The company is renamed "GeSi Software GmbH".
2009
Introduction of GeSi³
The GeSi software is being successively reprogrammed and appears in its third generation as GeSi³. It is a platform-independent Java application and uses an SQL database.
2008
Introduction of multilingualism for safety data sheets
Multilingualism of the SDSs has been introduced.
2004
Extension of the safety data sheets
The software has been extended once again to enable the classification of mixtures for safety data sheets in accordance with the EU directive. Multilingualism has also been consistently added through the use of a phrase catalog.
2001
Relocation to Kaiserstrasse
Feitsch GmbH moves from the Technology and Start-up Center to Kaiserstrasse in Würzburg.
1996
Conversion to a Windows application
The GeSi software is completely redeveloped from a DOS software to a Windows application and launched on the market.
1994
Expansion of hazardous substance management and risk assessments
The software will be expanded to include hazardous substance management, followed by a module for risk assessments in accordance with the ArbSchG.
1993
Establishment of the Feitsch company
Feitsch Gesellschaft für Software-Entwicklung mbH is founded, with Petra Feitsch acting as managing partner. The software was further developed and combined from individual modules into one program. The focus was on the creation of operating instructions.
1991
Foundation of ComSoft
The company ComSoft is founded by Petra and Dr. Dieter Feitsch after completion of the project.

Your contact to us

Do you have any questions? We answer!

Write us a message. Our experts will get back to you within a short time.

Mr. Daniel Seemann

Office Manager/Sales Assistant
GeSi Software GmbH

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