Open Source

I maintain several open source projects:

Fancytree JS
JavaScript tree view / tree grid plugin with support for keyboard, inline editing, filtering, checkboxes, drag'n'drop, and lazy loading.
WsgiDAV Python
A generic and extendable WebDAV server based on WSGI. It runs stand-alone, but is also a Python library that can be customized and used in your projects.
wunderbaum TypeScript
A JavaScript Treegrid control with emphasis on "tree". Depending on the number of columns and nesting depth, it can also be used as a plain tree, plain grid, or a simple list control.
Wunderbaum is a rewrite of the Fancytree library that offers performant and efficient handling of big data structures, uses modern technologies and has zero dependencies.
nutree Python
A Python library for tree data structures with an intuitive, yet powerful, API.
pyftpsync Python
Synchronize directories using FTP(S) or file system access. A stand-alone command line tool, but also a Python library that can be customized and used in projects.
arcade-js JS
A 2d game engine and math lib based for JavaScript and HTML5 Canvas. Comes with playable demos of Asteroids and Rip-Off.
fabulist Python
Python library to Generate random strings that make sense.
jquery-ui-contextmenu JS
jQuery plugin that turns a jQueryUI menu widget into a context menu.
grunt-yabs node.js
Collection of tools for grunt build and release workflows.
And Some More...
Miscellaneous stuff on GitHub…


Some ancient Freeware projects can be found here.