Open source, multi-platform system for issue tracking and team collaboration. It can be used to store, share and track issues with various attributes, description, comments and file attachments. It is easy to install and use but has many capabilities and is highly customizable.
Open source dual-pane file manager for Windows which merges the capabilities of Windows Explorer with the well known and easy to use orthodox user interface. Saladin supports both 32-bit and 64-bit versions of Windows.
Open source, multi-platform generator of the Mandelbrot family fractals. It uses very fast algorithms for maximum performance and generates high quality anti-aliased images. It allows real-time zooming navigation within the fractal and dynamic generation of the Julia fractal preview.
Open source program for drawing 3D surfaces from parametric equations. It uses a custom, very fast language called Misc to calculate the geometry. It also uses OpenGL to render scenes with high quality shaders.


Puzzle game for PC in a top-down perspective view. Its goal is to move boxes through three-dimensional rooms in order to open doors and reach the exit. It consists of 30 levels with varying difficulty.
Online jigsaw puzzle game which supports an unlimited number of players in real time. It was created for those who enjoy playing jigsaw puzzle with their friends or family. It's compatible with all modern web browsers, it also supports mobile devices.


New incarnation of

Today is the beginning of a new chapter in the history of the website, which I created almost twelve years ago, and the related websites dedicated to my open source projects. I moved these sites to a new server, but I also completely redesigned them and migrated them to the latest version of Drupal. I actually built them completely from scratch and imported the old content using some hand-crafted tools, so the whole conversion took about six weeks of work. I hope that you like the result.