Latest release

ZapczOS V4

A small independent operating system project with a desktop, browser, compiler, terminal, and 3D grapher. Download the latest ISO, inspect the source, or explore older builds from the archive.

Download V4 ISO Download Source View Screens

Current: V4
ISO: 50.2 MB
Source: 9.7 MB

ZapczOS V4 desktop with terminal and 3D grapher

01 Desktop OS

Windowed desktop, terminal, files, settings, and app launcher.

02 Built-in Tools

Browser, compiler, and 3D grapher included in the V4 image.

03 Public Archive

Current and older images stay available for testing and comparison.

Release index

Downloads

Files are served directly from this GitHub Pages repository.

Recommended

ZapczOS V4 ISO

Bootable image for the newest public build.

Download ISO

Source

ZapczOS V4 Source

Source package for code inspection and local experiments.

Download ZIP

ZapczOS V4Latest public image zapczosv4.iso Bootable ISO Download

ZapczOS V4 SourceCode package ZapczOSV4src.zip ZIP archive Download

ZapczOS V3Previous public image zapczosv3.iso Bootable ISO Download

ZapczOS V3 SourceCode package ZapczOSV3SOURCE.zip ZIP archive Download

ZapczOS 2.1Disk image zapczOS2.1.img IMG Download

ZapczOS 2.1Browser demo zapczv2.1.html Web demo Launch

ZapczOS 2.0Disk image zapczOS2.img IMG Download

ZapczOS V1First public image zapczOSv1.img IMG Download

System captures

Screens

V4 is shown first, followed by previous release captures.

ZapczOS V4 compiler window running a compiled program — V4 compiler

ZapczOS V4 browser viewing the Zapcz website — V4 browser

Utilities

Tools

Companion utilities and browser helpers.

Zapcz Shell

Standalone command-line utility for Windows builds and local testing.

Download EXE

Bionic Reading

Chrome extension that bolds the leading letters of each word. The navigation toggle runs the same effect on this page.

Download ZIP