Compare · Atlas OS and ReviOS
Win11Debloat vs Atlas OS and ReviOS
Atlas OS and ReviOS are often called “custom Windows”, but neither is a separate operating system. Both are playbooks: packages of scripts and settings that a program called AME Wizard applies to a normal Windows install. They change far more than Win11Debloat does. We read both projects' playbook files to compare them honestly.
On this page 6 sections
Short answer
Should I use Atlas OS, ReviOS or Win11Debloat?
- Win11Debloat if you want to keep a normal, fully supported Windows and be able to undo each change.
- Atlas OS or ReviOS if you want a much deeper modification and are prepared to reinstall Windows if something goes wrong. ReviOS recommends starting from a fresh Windows install.
- Check your build first: Atlas 0.5.0 runs only on Windows 11 24H2 and 25H2. ReviOS supports Windows 10 21H2 to Windows 11 26H2.
How playbooks work
You download AME Wizard from amelabs.net, then drag the Atlas or ReviOS playbook into it, and it applies the playbook to the Windows you have. A playbook is a renamed ZIP of mostly plain-text scripts, so its changes can be read before you run it. AME Wizard's window is closed source; the part that carries out the actions, TrustedUninstaller, is open source under MIT, according to Atlas's README. Both playbooks can also be used to prepare an installation ISO.
Side by side
| Win11Debloat | Atlas OS | ReviOS | |
|---|---|---|---|
| What it is | PowerShell script with a wizard | AME Wizard playbook | AME Wizard playbook |
| Version we read | 2026.08.24 | Playbook 0.5.0 (source of 4 May 2026) | Playbook 1.0 (source of 21 October 2026) |
| Windows builds | Windows 10 22H2, Windows 11 | Windows 11 24H2 and 25H2 only | Windows 10 21H2 and 22H2, Windows 11 23H2 to 26H2, x64 and Arm64 |
| Before it runs | Administrator rights | No other antivirus, Defender set as AME Wizard asks, internet, no pending updates, plugged in, and a protection Windows uses for file associations (UCPD) turned off | No other antivirus, Defender set as AME Wizard asks, internet, no pending updates, plugged in |
| Defender and updates | Not touched | Defender and automatic updates can be turned off, as options | See its documentation |
| Undo | Per tweak, plus restore point and registry backup | Removed apps can be reinstalled; no per-change undo described in its README | Not described in its README |
| Fresh install | Not needed | Not stated in its README | Recommended: “start with a fresh, stock Windows installation” |
| License | MIT | GPLv3 (playbook) | CC BY-SA 4.0 (playbook) |
Builds and requirements are from each playbook's playbook.conf; the rest from each project's README. Neither is a project we have run on our test machines.
Atlas OS in short
Atlas describes itself as “a transparent and lightweight modification to Windows, designed to optimize performance, privacy and usability.” Its playbook marks itself as an overhaul. Security features such as Defender, SmartScreen and automatic updates are offered as choices, with Defender left on by default; afterwards an Atlas folder on the desktop holds its settings. Atlas says the apps it removes can be reinstalled. Because it supports only Windows 11 24H2 and 25H2, it does not run on Windows 10.
ReviOS in short
ReviOS calls itself “a customized version of Windows, designed to be lightweight, stable, and focused on improving performance, privacy and compatibility.” Its playbook supports more builds than Atlas, including Windows 10 and LTSC editions, and it integrates the Revision Tool for further changes. Its README warns: “It's recommended to start with a fresh, stock Windows installation before applying the playbook to avoid potential conflicts with existing software and user data.” Its ISO option works only with Windows 11 ISOs.
Which to choose
- You use this PC for work or school, or cannot afford a reinstall: Win11Debloat. A playbook needs your antivirus removed and changes much more of Windows.
- Clean install anyway, and you want the deepest clean-up: ReviOS or Atlas, after reading what their playbooks change. Back up your files first.
- Atlas or ReviOS? Atlas if you are on Windows 11 24H2 or 25H2 and want its security options laid out; ReviOS if you are on Windows 10, LTSC, or a newer Windows 11 build Atlas does not list.
For the other options, see all alternatives.
Questions
Is Atlas OS legit?
It is a real open-source project: its playbook is public on GitHub (Atlas-OS/Atlas) under GPLv3, so its changes can be read. Whether it suits you is another question: it needs AME Wizard, whose window is closed source, and it changes much more of Windows than a debloat script.
Does Atlas OS support Windows 10?
Not the current playbook. Atlas 0.5.0 lists only Windows 11 24H2 (build 26100) and 25H2 (26200). ReviOS still supports Windows 10 21H2 and 22H2, and Win11Debloat supports Windows 10 22H2.
ReviOS vs Atlas OS: what is the difference?
Both are AME Wizard playbooks. ReviOS supports more Windows builds, including Windows 10, LTSC and Windows 11 26H2, and integrates the Revision Tool. Atlas supports only Windows 11 24H2 and 25H2 and keeps its options in an Atlas folder on the desktop. Their licenses differ: GPLv3 for Atlas, CC BY-SA 4.0 for ReviOS.
Can I install Atlas OS without reinstalling Windows?
Technically yes: AME Wizard applies the playbook to the Windows you have. ReviOS recommends a fresh install to avoid conflicts. If you want to keep your current Windows as it is, Win11Debloat is the safer choice.
Can I run Win11Debloat on Atlas OS or ReviOS?
We have not tested it. Both playbooks already remove most of what Win11Debloat targets, so there is little left for it to do.
Keep going
Something wrong or out of date? Email hello@win11debloat.dev and we will fix it.