Measured. Not monitored.

The desktop for leaving Windows, without leaving anything behind.

Metricito OS is a fast, private Linux desktop. Your Office files open in an office suite laid out like Microsoft 365, Mail and Calendar are set up for Microsoft 365, and your games run with Steam and Proton.

Get the preview See what's inside

Frame time, ms. Guides at 16.7 ms (60 fps) and 6.9 ms (144 fps). An illustration of the steady trace our logo is drawn from, not a benchmark.

Screenshots

What you see after install.

The desktop, with the frosted dock and the painted waveform wallpaper.

A spreadsheet and Wave Terminal tiled side by side, the terminal showing a shell, a CPU graph, a web page and a file list — Windows tile on their own. Spreadsheets beside Wave Terminal.

Metricito Office Documents with its Word-style ribbon: Home, Insert, Design, Layout, References, Mailings, Review and View — Documents, with Word's ribbon tabs.

Metricito Office Spreadsheets with its Excel-style ribbon and a small table of quarterly figures — Spreadsheets, with Excel's ribbon tabs.

The login screen.

Starting from a USB stick.

Screenshots of preview image 022 in a virtual machine.

Productivity, compatibility, gaming

Everything you used on Windows has a place here.

Each part of Metricito OS serves at least one of three goals: getting work done, keeping your files and devices working, and playing your games.

Productivity

Metricito Office, based on LibreOffice, with ribbons laid out like Excel and Word.
Pivot tables, slicers and Flash Fill that survive a round trip to Excel.
Mail and Calendar set up for Microsoft 365 accounts.
Wave Terminal, with Nord, Catppuccin, Tokyo Night and more built in.
Metricito Talk, a Teams alternative with no server in the middle, in development.

More about Office · More about Talk

Compatibility

Install alongside Windows on the same PC, or on its own drive.
Restart into Windows with one click, straight from the PC's boot list.
Windows programs open through Bottles, offered the first time you need it. Windows drives open in Files.
Network printers are found and set up on their own.

Gaming

Steam and Heroic installed, with Proton for Windows games.
GameMode for the CPU and notifications held while you play.
MangoHud for frame times, one switch away.
Memory settings that close a browser tab before your game.

More about gaming

Looks after itself

Repairs you would otherwise search forums for.

Self-healing

An update cut off by a power cut is finished, broken packages are fixed, and a network, Bluetooth or printing service that stops is restarted, without asking.

Repair This PC

One app runs every repair at once and also rebuilds app menus, icons, fonts and Flatpak apps.

Snapshots before updates

The system is saved before packages change, so a bad update can be rolled back.

Plugins

Add developer tools, creative apps or streaming with one command. Adding a plugin never runs its code until you turn it on.

No telemetry

Nothing reports home. Apps that collect usage data by default ship with it turned off. How we handle security

Frosted glass, your choice

Windows, panel and dock share one frosted look. One switch makes them solid.

Specification

Built from parts you can check.

Base	Debian 13 packages, amd64
Desktop	COSMIC 1.10, built from source with Metricito patches
Office	Metricito Office 26.8, based on LibreOffice
Memory	zram, zstd, half of RAM up to 4 GiB; earlyoom
Disks	NVMe none · SSD mq-deadline · HDD bfq · weekly TRIM
Network	fq + BBR · NTS time from European servers
Updates	Signed channel, updates.metricito.com, hosted in the EU
Signing key	592E 8F89 865C 2520 C670 7DE3 4B31 99DA 2181 C793
Security	Secure Boot, AppArmor, firewall on, CPU mitigations on

Releases

Named by SI prefix, one step at a time.

kKiloIn development

MMegaPlanned

GGigaPlanned

TTeraPlanned

Preview builds

Metricito OS is in development. Preview images are tested on real PCs before each release. A public download opens with Kilo, the first release.