Popular free free operating systems

RECOMMENDED: Click here to fix Windows errors and optimize system performance

Software, secure shells, Kerberos authentication, virtual servers.

You can download FreeBSD here.


February 2021 Update:

We now recommend using this tool for your error. Additionally, this tool fixes common computer errors, protects you against file loss, malware, hardware failures and optimizes your PC for maximum performance. You can fix your PC problems quickly and prevent others from happening with this software:

  • Step 1 : Download PC Repair & Optimizer Tool (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.


OpenSolaris is an operating system developed by Sun Microsystems. It works well on desktops, laptops, servers and data centers. OpenSolaris is based on the graphical interface like Ubuntu and has a rich graphical desktop and a window for easy navigation. It is now available in version 11 and can be downloaded free of charge from the Oracle website.

OpenSolaris Features

      • ZFS (the file system)
      • Bootable clones
      • Data checksum
      • Storage pools (zpools)
      • Snapshots (using the Copy function) on Write)
      • Timers

In addition, Sun’s ZFS file system now features native Solid State Drive (SSD) management technology, enabling system administrators to optimize SSD performance.

You can download OpenSolaris here.


This is a free Windows compatible operating system that offers the advantages of running native Windows applications. In addition to being open source software (its strong point), the tool has a really cool feature that Windows does not offer – an application manager that is very similar to the Linux package manager. To use the software, go to the official React OS website and after downloading the image, use a tool like Rufus to write it on a USB stick.

Haiku OS

What most users like about this operating system is its consistency and coherence. To boot the operating system, simply insert the USB stick into a USB port and reboot. This should not be a problem, as most modern computers today can be configured to boot from the USB stick. The operating system is fast and responsive. It is also preinstalled with a number of applications and demos. Start-up should therefore not pose any problems for new users either.

Fedora & Debian are the other distributions that should be mentioned here.

Also read:

      1. Alternative PC operating systems
      2. Linux alternatives to Windows.

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RECOMMENDED: Click here to troubleshoot Windows errors and optimize system performance