This page contains a collection of small tools and prototypes based on the latest web and backend technologies, as well as popular GIS functionalities. Many of the functionalities are used by me personally for years and are constantly developed further.  Feedback is welcome via the contact form.


Generate passwords with ease

Caesar, Vigenere & VigenereAutokey

MD5, SHA1, SHA256, SHA384, SHA512

Collection of text tools

Calculate PayPal fee for easy transactions

Visualize air control measurements

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