The best Virtualization alternative to TrueNAS is Unraid. It's not free, so if you're looking for a free alternative, you could try NASty. If that doesn't suit you, our users have ranked more than 25 alternatives to TrueNAS and three of them are Virtualization Tools so hopefully you can find a suitable replacement.
Flexible operating system combining storage management with support for mixed drive sizes, Docker containers, virtual machines, hardware and GPU passthrough, browser-based interface, file protocols, scalable expansion, integrated parity, and monitoring features.
StorMagic SvSAN is a highly available hyperconverged storage solution using only two servers and protects data with encryption features and key management.
NASty is a NAS operating system built on NixOS and bcachefs. It turns commodity hardware into a storage appliance serving NFS, SMB, iSCSI, and NVMe-oF — managed from a single web UI, updated atomically, and rolled back when things go sideways.
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