AlmaLinux OS
7.1#1 in server operating systemFree planFree planAPILinuxSelf-hostedWindows
VisitAlmaLinux OS vs Ubuntu Server
Ubuntu Server
6.6#3 in server operating systemFrom $25 a yearFree planLinuxSelf-hosted
VisitWhat both publish
| Fact | AlmaLinux OS | Ubuntu Server |
|---|---|---|
| Compliance | AlmaLinux OS 9.2 is stated to have FIPS 140-3 validation and to appear on the NIST active list. | Ubuntu Pro includes security hardening features for frameworks and standards including FIPS 140, DISA-STIG, CIS, FedRAMP, CMMC, PCI-DSS, and Cyber Essentials. |
| Support | Community support is available through forums, chat, and Reddit, while commercial support is offered by listed providers including Cybertrust Japan and TuxCare. | Ubuntu Pro plus Support offers 24/7 expert support with break-fix and bug-fix coverage for infrastructure and applications. |
| System requirements | The installation guide specifies at least 1.5 GB RAM, 10 GB disk space minimum and 20 GB recommended, plus an 8 GB USB drive minimum. | The listed installation requirements include 1.5 GB system memory, 5 GB of free hard drive space, and a USB port or DVD drive for installer media. |
AlmaLinux OS plans
- AlmaLinux OSFree
Ubuntu Server plans
- Ubuntu ServerFree
- Ubuntu Pro PersonalFree
- Ubuntu Pro CommunityFree
- Ubuntu Pro Workstation$25 a year
- Ubuntu Pro with 24/7 Enterprise support — Workstation$300 a year
- Ubuntu Pro Server with unlimited VMs$500 a year
Pick AlmaLinux OS if…
AlmaLinux OS suits users seeking an enterprise Linux distribution without a commercial license agreement, including those replacing CentOS Linux. Its images and deployment options cover physical, virtual, cloud, container, and WSL environments.
Pick Ubuntu Server if…
Ubuntu Server suits organizations deploying workloads on physical servers, virtual machines, clouds or edge devices. Teams needing extended security maintenance, fleet administration or enterprise support can consider Ubuntu Pro options.