The development kit for over a hundred z80 family machines - c compiler, assembler, linker, libraries.

Online converter from png image to ZX Spectrum screen format.

Growing collection of high-quality APIdoc.

Zero-overdraw isometric graphics for the ZX Spectrum, featuring the Ant Attack map.

Collection of ZX Spectrum annotated game source code dissasemblies as .skool files

🔏 Automatically renew SSL certificate for your Porkbun domain

Java re-implementation of tiny graphviz

📦 Gradle/Maven plugin to package Java applications as native Windows, MacOS, or Linux executables and create installers for them.

a ZX Spectrum emulator for the browser

Running ARM8 Rpi 3b+ instance in qemu

Mathematics pastebin software that powered MathB.in from 2012 to 2025

A JavaScript framework for interactive (mathematical) content.

Quantifier Elimination by Partial Cylindrical Algebraic Decomposition

Experiments with MIP

XaoS.js - Realtime fractal zoomer in JavaScript

Ground-up rewrite of the Javascript Spectrum emulator

GeoGebra apps (mirror)