Best NAS operating systems
Operating systems and software for turning your own hardware into a network-attached storage server for files, backups, media and apps.
2 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All NAS operating systems
- Alternatives to TrueNAS
ZFS-based storage operating system for building a NAS on your own hardware or buying an appliance.
Open sourceSelf-hostableSelf-hosted - Alternatives to Unraid
Paid NAS operating system that pools mixed-size drives and runs Docker apps and VMs.
PaidSelf-hostableSelf-hosted
Our picks by need
Common questions
What are the best NAS operating systems?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading NAS operating systems right now are TrueNAS and Unraid.
Are there free NAS operating systems?
Yes. TrueNAS (open source) has a free option, out of 1 free or freemium apps we track.
Which NAS operating systems are open source?
TrueNAS.