Six things we give away. No ads, no tracking, no strings.
A 3D maze with many levels, geometries and hidden goodies.
Ad-free, no tracking. A gift to the community.
Try the demoA real-time Git branch synchronizer. Ideal for parallel AI coding sessions (Claude Code, Cursor, Copilot) or workflows with many active branches.
MIT open source — a gift to the community.
See on GitHubAn unofficial Chrome extension for the Belgian Collect&Go shopping cart — adds per-aisle totals at a glance. FR & NL.
MIT open source — a gift to the community.
See on GitHubA development environment for Windows, macOS, Linux and the browser, for five historic languages: Simula 67, Simula I, Algol 60, Algol 68 and Pascal (as on the CDC 6600). Compilers, debugger, standalone .exe files and documented examples.
Source code on GitHub — for the curious and for teaching.
An emulator of the CDC 6600 (1964), the first supercomputer: central processor and ten peripheral processors, a complete COMPASS 3 assembler and a development environment that runs in the browser.
Source code on GitHub — for the curious and for teaching.
An educational simulator of the Z80A processor and the Amstrad CPC 6128 (1985), running in the browser: an assembler, step-by-step execution down to the T-state, an animated view inside the processor and every chip, screen, keyboard, sound and floppy disks.
Source code on GitHub — for the curious and for teaching.