swap_horiz ReactOS Alternatives

1

Windows 7

Windows 7 was a widely adopted desktop operating system released by Microsoft in 2009, featuring a redesigned user inter...

Legacy Microsoft General Purpose Desktop

9.2 Excellent

2

Red Hat Enterprise Linux

Red Hat Enterprise Linux is a stable, subscription-based Linux distribution widely used for servers and virtualization,...

Server Enterprise Commercial Linux

9.2 Excellent

3

z/OS

z/OS is IBM’s flagship mainframe operating system, renowned for its robust transaction processing capabilities, extensiv...

Enterprise Ibm Mainframe Proprietary

9.2 Excellent

4

Windows XP

Windows XP was a widely used graphical operating system released by Microsoft in 2001, featuring a redesigned interface...

Legacy Microsoft General Purpose Desktop

9.1 Excellent

5

FreeBSD

FreeBSD is a Unix-like, open-source operating system known for its stability and modular design, frequently utilized in...

Server Open Source General Purpose Unix

8.9 Great

6

Android

Android is a mobile operating system based on a modified version of the Linux kernel, primarily developed by Google and...

Google Mobile Smartphone Open Source

8.7 Great

7

SUSE Linux Enterprise Server

SUSE Linux Enterprise Server is a commercially supported Linux distribution built upon open-source components, offering...

Server Enterprise Commercial Linux

8.7 Great

8

OpenBSD

OpenBSD is a Unix-like, free and open-source operating system renowned for its stringent security focus, achieved throug...

Server Open Source Security Focused Unix

8.7 Great

9

IBM AIX

IBM AIX is a proprietary Unix operating system developed by IBM for enterprise computing. It has been used primarily on...

Server Enterprise Unix Ibm

8.7 Great

10

Fedora Linux

Fedora Linux is a community-developed, free and open-source operating system primarily focused on providing the latest s...

Server Community Linux Desktop

8.6 Great

11

Alpine Linux

Alpine Linux is a security-oriented, lightweight distribution based on musl libc and BusyBox, commonly used for containe...

Lightweight Server Security Focused Linux

8.6 Great

12

openSUSE Tumbleweed

openSUSE Tumbleweed is a rolling release Linux distribution that continuously integrates the latest software packages an...

Community Linux Desktop Opensuse

8.5 Great

13

Raspberry Pi OS

Raspberry Pi OS is the official operating system for the Raspberry Pi family of single-board computers, built upon a Deb...

Linux Desktop Single Board Raspberry Pi

8.5 Great

14

IBM i

IBM i is a multiplatform, midrange operating system developed by IBM, primarily used for business-critical applications...

Server Enterprise Ibm Proprietary

8.5 Great

15

Kali Linux

Kali Linux is a Debian-based, free and open-source operating system designed primarily for digital forensics, penetratio...

Security Linux Desktop Penetration Testing

8.1 Great

16

ChromeOS

ChromeOS is a lightweight, cloud-based operating system developed by Google primarily for Chromebooks, utilizing the Chr...

Google Chromebook Linux Desktop

7.8 Good

17

Windows 11

Windows 11 is Microsoft’s latest desktop operating system featuring a redesigned interface with centered taskbar, update...

Modern Microsoft General Purpose Desktop

7.4 Good

18

FreeDOS

FreeDOS is a free and open-source DOS-compatible operating system designed for use on PCs, offering a straightforward en...

Legacy Open Source Desktop X86

7.1 Good

19

Haiku

Haiku is a lightweight, real-time operating system primarily used in embedded systems due to its minimal footprint, effi...

Lightweight Community Open Source Desktop

6.9 Fair

20

Windows 8.1

Windows 8.1 was released in October 2013 as an update to Windows 8, introducing features like the Charms bar and improve...

Legacy Microsoft Desktop Proprietary

5.8 Mediocre