swap_horiz Windows 8.1 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

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

7

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

8

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

9

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

10

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

11

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

12

Windows 10

Windows 10 is a widely-used desktop operating system developed by Microsoft. Its notable stability and broad compatibili...

Business Modern Microsoft Desktop

8.1 Great

13

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

14

Oracle Solaris

Oracle Solaris is a commercially supported Unix-like operating system built upon the illumos project, known for its robu...

Server Legacy Enterprise Oracle

7.9 Good

15

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

16

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

17

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

18

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

19

HarmonyOS

HarmonyOS is a distributed OS developed by Huawei, designed to seamlessly connect and synchronize devices across smartph...

Mobile Distributed Huawei Embedded

6.8 Fair

20

ReactOS

ReactOS is an open-source, six-step microkernel operating system aiming to be binary compatible with Windows NT, allowin...

Community Open Source Desktop Experimental

4.4 Poor