PI Mitterfellner


The Zerf (time recording) application was developed by PI Mitterfellner and has been in use in the company since March 2005.


This software consists of a time recording tool for employees and an administration tool including analysis functions.


This software is intended only for internal use and is not commercially available.

User interface

The internal time recording software consists of the acquisition tool for employees and an AdminTool for analysis and reporting.

Technical description

Development environment:
Microsoft Visual Studio 2010 (Microsoft .NET Framework 4.5)

Microsoft SQL Server 2005

Graph/Report component:
Developer Express 2010 vol 2

Operating system:
Microsoft Windows 7 (or later)