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CarrierLib Java Library

Extend your Java software by adding a fully featured shipping interface with multi-carrier support: the brand new CarrierLib. Currently the API provides support for shipcloud© to send shipments with the follo...

Battery Manager Software

The Battery Manager software manages rechargeable and primary batteries with databases. It supports a range of charging devices connected to serial computer ports (RS-232, USB). The measurement data gathered ...

VFSLib Java Library

VFSLib is a Java library to extend the Apache Commons VFS 2.0 library with providers for recent network file systems like Dropbox©, Google Drive©, and Amazon S3©. The VFS 2.0 library allows programmers to a...

Data Digester Software

The Data Digester® software is the fully integrated solution for message digests (aka checksums) and OpenPGP signatures. The graphical user interface is easy to use, feature rich, and makes it easy to deploy ch...

Premium Support

Advantages of Premium Support Professional ticket system Extended support by e-mail  (special address, PGP-encrypted) Requests are processed with highest priority Free updates for the licen...

Tech Zone Overview

This section provides material with focus on Java technology which could be interesting for the developer community. All software and resources provided in this section is in the public domain, may be used for ...

Supported Projects

Besides our daily business we support environmental and social projects with a focus on technical solutions. These projects are financed by selling our products with certain non-profit grades e.g. 2% of the n...

  • CarrierLib Java Library

    Monday, December 28 2015
  • Battery Manager Software

    Monday, May 12 2014
  • VFSLib Java Library

    Friday, October 25 2013
  • Data Digester Software

    Saturday, April 20 2013
  • Premium Support

    Wednesday, April 17 2013
  • Tech Zone Overview

    Wednesday, March 27 2013
  • Supported Projects

    Tuesday, March 12 2013


Current Releases

Battery Manager Logo Battery Manager 1.6.3
2015-05-06  Notes
Data Digester Logo Data Digester 1.6.15
2015-04-15  Notes
VFSLib Logo VFSLib 1.6.7
2015-12-28  Notes
CarrierLib Logo CarrierLib 1.6.1
2015-12-28  Notes

Home - Leisenfels UG, Germany

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Leisenfels UG is specialized in creating energy efficient software tools mainly programmed in Java. Founded by Dipl.-Inform. Axel Schwolow in 2013 as a privately held company, Leisenfels is located in Bissendorf, Lower-Saxony, Germany. With our software solutions we help our customers to increase their productivity while saving natural resources in all stages of the software lifecycle.

Our services for you

  • Development and sales of software
  • Premium support for end users and developers
  • Green IT solutions (hardware/software)
  • Individual projects on the basis of Java SE/EE
  • App development for smartphones and tablets
  • Website creation, hosting on Leisenfels servers including e-mail

Please contact us directly using the contact form. We are looking forward to hear from you!

Eco Hint Some of our products directly focus on environment protection: please check out Battery Manager and help to reduce waste by using rechargeable batteries instead of disposable/primary batteries.