Open Source Alternatives to Unraid OS

An operating system for self-hosted servers and network-attached storage designed for homelabs. The software allows users to mix and match hard drives of various sizes to build a parity-protected storage array and high-performance storage pools supporting ZFS, BTRFS, and XFS. It includes a user interface for managing Docker applications via community-created templates and supports full virtualization for Windows and Linux virtual machines. The platform is used for local file storage, game server hosting, and content creation. It is deployed as a perpetual license on hardware servers. Users can access a library of over 10,000 apps and plugins through Community Apps and establish encrypted remote access using VPN and Tailscale. The system is designed to scale from small first-time setups to large servers with unlimited storage devices.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Unraid OS give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 4 open source alternatives to Unraid OS. The most popular are CasaOS, Runtipi and openmediavault. Most use the GPL-3.0 or Apache-2.0 license, and 2 offer an official Docker image.