01/ Linux Mint
Best for: A familiar, Windows-like desktop.
Runs on: PC
Visit Linux MintDevelopment & IT · Operating system
Free alternatives to Microsoft Windows
Microsoft Windows by Microsoft: The most widely used desktop operating system. Pricing: licence (often bundled with PCs). Here are 4 free options that cover the same job.
| Alternative | Type | Platforms | Best for | |
|---|---|---|---|---|
Linux Mint | Open source | PC | A familiar, Windows-like desktop | Get it |
Zorin OS Core | Open source | PC | Switching from Windows with minimal learning | Get it |
WineOpen source; re-implements the Windows programming interfaces through clean-room reverse engineering. | Compatible | Linux, macOS | Running many Windows programs on Linux or macOS | Get it |
ReactOSAlpha-quality software; not ready for everyday use. | Compatible | PC | Experimenting with a Windows-compatible open-source OS | Get it |
 Microsoft WindowsThe paid original | Licence (often bundled with PCs) | – | Operating system | Visit |
The alternatives in detail
Open source
02/ Zorin OS Core
Best for: Switching from Windows with minimal learning.
Runs on: PC
Visit Zorin OS Core03/ Wine
Best for: Running many Windows programs on Linux or macOS.
Open source; re-implements the Windows programming interfaces through clean-room reverse engineering.
Runs on: Linux, macOS
Visit Wine04/ ReactOS
Best for: Experimenting with a Windows-compatible open-source OS.
Alpha-quality software; not ready for everyday use.
Runs on: PC
Visit ReactOSAbout “Compatible” tools: An independent, legal re-implementation that opens the same files or runs the same software. Not a cracked copy.
Frequently asked questions
Is there a free alternative to Microsoft Windows?
Yes. Linux Mint is a strong free option for a familiar, windows-like desktop. Other choices include Zorin OS Core, Wine, ReactOS.
Which Microsoft Windows alternative is open source?
Linux Mint, Zorin OS Core, Wine, ReactOS are open source.
Are compatible (reverse-engineered) alternatives legal?
Yes. Tools marked Compatible are independent re-implementations built to open the same files or run the same software. They do not contain the original program's code. They are not cracked or pirated copies, which we never recommend.