Q4OS is a Debian-based desktop Linux distribution offering a choice of a classic-style user interface (Trinity) and a modern desktop environment (KDE Plasma). The project also develops various utilities, such as Desktop Profiler and Software Center, as well as installers for third party applications. In late 2024, Q4OS started offering FreeXP and Free10, two Q4OS variants with Windows-like themes to help users migrate from unsupported Windows versions to Linux.
To compare the software in this project to the software available in other distributions, please see our Compare Packages page.
Notes: In case where multiple versions of a package are shipped with a distribution, only the default version appears in the table. For indication about the GNOME version, please check the "nautilus" and "gnome-shell" packages. The Apache web server is listed as "httpd" and the Linux kernel is listed as "linux". The KDE desktop is represented by the "plasma-desktop" package and the Xfce desktop by the "xfdesktop" package.
Colour scheme:green text = latest stable version, red text = development or beta version. The function determining beta versions is not 100% reliable due to a wide variety of versioning schemes.
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Reader Ratings
Reader supplied reviews for Q4OS
Average rating
8.7
from 190 review(s) Please specify which version of the distribtion you are reviewing. Please select a rating in the range of 1-10. Please write at least a few sentences about the distribution while limiting your review to 4080 characters.
Version: 6.5 Rating: 10 Date: 2026-01-17 Votes: 1
What can I say about this distribution? I tried Q4OS a year ago, but found it to be just a basic Debian distribution. Two months ago, I tested it again and discovered the genuine Q4OS tools. It's truly impressive what it can do. The most hilarious are Windows style installers, they make Linux incredibly Windowish. This should appeal to Windows users, as it will increase their trust in this distribution. There are more draws on the scene, for example Windows like themes. These themes make Linux better, faster, more secure Windows clone. Do you want to clone your running Q4OS and run it live from USB memory stick? No problem, s4-snapshot does this job. And how do you install s4-snapshot? Easy, with the Windows-like installer :))) Q4OS is also incredibly lightweight and not bloated.
I must give 10 out of 10. This distribution is a fun but well-thought-out compilation based on Debian. I really like it and would recommend it to everyone. Q4OS is worth trying :) You'll be amazed :)
Version: 5.8 Rating: 10 Date: 2026-01-14 Votes: 1
I've been using Aquarius on an old P4 Bios date 2004, with 2GB of ram and 2 HDD's. I had to keep XP Pro on one drive, but wanted something upto date for use on the net. I had downloaded NomadBSD onto a usb drive, unfortunatly the P4 does not boot fron a usb drive so the next small os I saw online was Q40S . This was in the form of an ISO and quite small about 686MB and easy to burn to a CD. Also It was important that I got i386 (32Bit) OS as my P4 is only single core!! . It's getting hard to get a good 32Bit OS. Since installing Q40S on my old P4, there was no hiccup and runs really well , It installed all drivers and picked up all hardware including my Nvidia AGP MX440 64MB . I'm happy with the trinity desktop.
The only thing I was not getting was updates and after 5 mths and firefox crashing ,I selected a full install as recommended and once all the updates finally came through, my system has not falted again. Although my PC is more than 20yrs old, It now has a new life.
I would recommend Q40S for anyone with an old PC , It's just as fast as running XP Pro , but better because it's upto date with current software.! Keep up with the good work !!
Version: 6.4 Rating: 9 Date: 2026-01-02 Votes: 4
I was a longtime user of MX Linux, MX XFCE then MX Fluxbox. However, I see Wayland as the future. So, I tried MX 25 KDE. Although much improved over earlier MX KDE releases, I still had memory issues not found in MX XFCE or MX Fluxbox.
So, I tested other KDE/Wayland distros, 3 based on Debian 13 and one (Ultramarine) based on Fedora 43.
Ultramarine KDE improves upon Fedora KDE but it is just not for me. It has the latest software but I don't really need that. Fedora-based distros tend to be more resource heavy and rely too much on Flatpaks,
Sparky 8 KDE was a total bust ... a regression from version 7. I couldn't even get my wi-fi password to work.
Neptune 9 KDE is quite good. It is a solid German distro running the largely German-managed KDE desktop. Although Neptune pre-installed Kdenlive and Audacity audio production software (which I happen to use), in the end, it was my 2nd choice.
Q4OS 6 is my top KDE choice. It is more resource frugal than any of the other KDE distros and did slightly better running GeekBench 6. By default, Q40S set up the Kate editor the way I like, with a "run as administrator" option (Neptune did not). Q4OS does not add a lot of software bloat. The Q4OS KDE Discovery Software Store includes both native (my preference) and Flatpak installation options. Discovery also handles click-to-install .DEB files well.
Since I much prefer KDE, I am not a fan of Q40S's primary attention to its own throwback TDE (Trinity) desktop. However, this does suggest added attention to resource efficiency more than other Linux distros.
Like all modern KDE distros, Q4OS KDE is exceptionally customizable, has the best theming, can disable an unused trackpad with a simple checkbox, with access to the well-regarded KDE community. Q4OS has its own relatively active community. However, they do seem to cater to TDE users more than KDE users.