About us

Our mission is to bring the same level of visibility and control to Excel workbook files as Git does for source code. By making Git work with Excel, we help organizations control their Excel workbooks using one of the most trusted version control systems.


Felix Zumstein

Felix is our product manager and always in touch with our clients to drive development into the right direction. As the creator of xlwings, our popular open-source Python drop-in replacement for Excel VBA, Felix has deep knowledge of Excel. Felix is based in Zürich, Switzerland.

Björn Stiel

Björn is the technical architect behind xltrail. As a former quant developer and trader at UBS Investment Bank in London, Björn has in-depth experience with very large and complex Excel workbooks and organizational issues around managing spreadsheets. Björn is based in London, United Kingdom.

Pablo Mouzo

Pablo is responsible for the xltrail frontend. Pablo has a background in a variety of industries, from banking and legal to farming and e-commerce. Previously, Pablo has worked on data mining and database projects. Pablo is based in Buenos Aires, Argentina.


The company behind xltrail is Zoomer Analytics GmbH. Zoomer Analytics is based in Zürich, Switzerland, and was founded in 2014. We originally come from a consulting background, specialising in custom Python solutions for clients in the financial services industry.

Our experience as consultants and our professional backgrounds in investment banking and asset management gave birth to xltrail. If you want to find out more about our consulting work, have a look at our company website.

If you want to find out more about how to use Python as an Excel drop-in VBA replacement, have a look at out our popular open-source project xlwings.

About Us
Contact Details

Zoomer Analytics GmbH
Eichbühlstrasse 19
8004 Zurich


© 2019 Zoomer Analytics LLC. All rights reserved.