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Other projects


The result of the sudden idea to implement the game Snake in Excel.

Trainer for mental calculation

A lightweight tool to train your mental calculation skills in basic arithmetic operations.

Scoreboard for card games – Pro

A tool to count the score for almost anything, mostly suited for card games. The Pro version (free) uses macros and has more functionalities but can only be run on a Mac or PC.

Scoreboard for card games – Lite

A tool to count the score for almost anything, mostly suited for card games. The Lite-version works without any macros thus is suitable for smartphones and tablets.



A hearing aid app for android.


  • Stream the amplified mic sound to the headphones
  • Stream in realtime (~20 ms delay, on supported devices* )
  • Apply an equalizer to match personal hearing loss
  • Easy setup wizard

*) The delay may vary depending on the hardware and software configuration of the device.

Tic Tac Toe

A modern implementation of the Tic Tac Toe game.


  • Modern design
  • Play against the computer
  • Different difficulty settings: Very easy up to unbeatable
  • Play against your friends (offline and online)

Commandline games

A collection of funny command line games written in Java.


A (somewhat) secure approach to storing api keys in open source projects.


A Java library for generating random user data. Like Lorem Ipsum, but for people.


A tool to launch throw-away VPN servers in seconds.

Hangman Solver

An algorithm to solve the popular hangman game.