This page does only contain a small selection of my work. For a complete list, have a look at my GitHub repos.


Deutsche Bahn price calendar. Wanna travel from A to B without spending all the money you earned by following those shady e-mails advising you to invest in nigerian cow medicine? Bahn-Guru will show you the cheapest DB tickets for each day in the next few weeks, so you know exactly when it's the best time to grab your stuff and take the next train.

Direct connections

All direct long-distance railway connections for cities in Germany 🚅.

Travel price map

The travel price map shows you the cheapest railway and coach (bus) travel prices between european cities 🚅.

Automated transit maps

Generate schematic maps (“metro maps”) for given (transit) network graphs using a Mixed Integer Programming approach.

Back to the root(s).