Download FyshOS
Grab a live ISO and try the Tyde desktop straight from a USB stick — no installation required. Builds are produced automatically from the latest source.
64-bit PC
Intel or AMD x86_64 — the right choice for most desktops and laptops.
Download ISOFyshOS-2026-07-11_15.09-amd64.hybrid.isoARM 64-bit
AArch64 machines such as the Raspberry Pi 4 and other ARM boards.
Download ISOFyshOS-2026-07-11_14.57-arm64.hybrid.iso32-bit PC
Older x86 hardware that cannot run a 64-bit system.
Download ISOFyshOS-2026-07-11_15.09-i386.hybrid.isoThese are rolling test builds — each one is the latest snapshot of FyshOS for that architecture. You can browse a history of our ISO downloads on the GitHub releases page.
Getting Started
From download to desktop in three steps
Write the ISO to a USB stick
Use a tool such as balenaEtcher or dd to flash the image onto a USB drive of 2 GB or larger. The images are hybrid, so they also work when burned to a DVD.
Boot from the drive
Restart your computer and choose the USB drive from the boot menu. You may need to disable Secure Boot in your firmware settings first.
Try it, then install
FyshOS runs live from the USB stick so you can explore the Tyde desktop before committing. When you are happy, run the installer from the desktop to put it on your disk.