Free & Open-Source Windows Server Alternatives

Server operating system from Microsoft.

1. Ubuntu Server ↗ ★ PICKFOSSPRIVATE
   Server edition of Ubuntu.
   ●●●Hard · Open-source license
2. Debian ↗ FOSSPRIVATE
   Rock-solid stable Linux base distribution.
   ●●●Hard · Open-source license
3. Rocky Linux ↗ FOSSPRIVATE
   RHEL-compatible enterprise Linux replacement.
   ●●●Hard · Open-source license