Welcome!

I'm Claus Wolf, and I'm glad you've found your way to my little corner of the web.

By day, I work as a consultant with libraries around the world. In my spare time, I enjoy tinkering on the web, and building iOS and macOS apps in Swift. If you have any questions or just want to say hello, feel free to reach out - I'd love to hear from you.

Open Access Helper

iPhone & iPad

There are > 50 million copies of otherwise pay–walled articles, this App helps you access them on your iPhone and/or iPad!

Open Access Helper

macOS

Combine the power of unpaywall.org, core.ac.uk, opencitations.net and more, all in one convenient Safari App Extension!

Open Access Helper

Chrome, Chromium & Firefox

Other might port their Chrome extension to Safari, I ported my Safari App Extension to Chrome & Firefox!

Spesensatz

iPhone

Den Spesensatz für deinen aktuellen Ort immer und überall, schnell zur Hand. Inklusive Wechselkursen - ideal für Geschäftsreisende.

Sesam2050

Datenbank

Sesam2050 bietet inzwischen > 33.000 ausgewählte Datensätze zur Fachliteratur der Kinder- und Jugendliteratur mit deutschsprachigen Metadaten.