Welcome!

My name is Claus Wolf and I am delighted you found my little nook on the web.

During the day I am a consultant working with libraries around the world. In my spare time I tend to tinker on the web, write about all things Apple, or create iOS / macOS apps in Swift. If you have questions, please contact me!

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.