Windows Server 2019 Alternatives

TrueNAS Core (formerly FreeNAS) is a storage operating system strong and robust enough to meet the needs of enterprise level businesses.

OpenMediaVault is the next generation network attached storage (NAS) solution based on Debian Linux.

Open Source

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free Open Source freemium

Simplicity. Flexibility. Scalability. Modularity. Unraid empowers you to build the system you’ve always wanted using your preferred hardware, software, and operating systems.

Secure, fast and economically scalable, Ubuntu helps you make the most of your infrastructure. Whether you want to deploy a cloud or a web farm, Ubuntu Server supports the most popular hardware and software.

Rockstor is a free and open source NAS (Network Attached Storage) operating system.

File Sharing, OS & Utilities, and Security & Privacy

A backup program for disk arrays. It stores parity information of your data and it recovers from up to six disk failures.

Enterprise Storage OS. An open source, high performance, block-level storage platform.

Open Source

State of the art, file based drive pooling software.

PetaSAN is an open source Scale-Out SAN solution offering massive scalability and performance.

Univention Corporate Server UCS with Active Directory functions and App Center is the cost-efficient and popular successor to Microsoft's server solutions.

DataCore provides IT with advanced data storage technology to accelerate performance, increase efficiency, and achieve zero-downtime availability.

Simplify your IT with HPE Simplivity hyper converged infrastructure, your all-in one management solution for hybrid cloud and VM efficiency, scalability.