===== Free NAS Systems =====
|-|Free|Kernel|Hardware|Space|DOCKER|DDNS|USB boot|Download|
|QuTScloud|Not|Linux|-|least 2GB|√|√|√|[[https://www.qnap.com.cn/zh-cn/download?model=qutscloud&category=firmware|Official Download]]|
|Unraid|Not|Slackware|X86&4GBRAM|least 2GB|√|√|√|[[https://unraid.net/zh/%E4%B8%8B%E8%BD%BD|Official Download]]|
|TrueNAS CORE|FREE|FreeBSD|X86 dual core&8GBRAM|least 16GB|X|X|√|[[https://www.truenas.com/download-truenas-core/|Official Download载]]|
|TrueNAS SCALE|FREE|Debian|X86 dual core&8GBRAM|least 16GB|√|X|√|[[https://www.truenas.com/download-truenas-scale/|Official Download]]|
|OpenMediaVault|FREE|Debian|X86&ARM|least 4GB|√|X|√|[[https://www.openmediavault.org/download.html|Official Download]]|
|XigmaNAS|FREE|FreeBSD|X86|least 2GB|X|X|√|[[https://xigmanas.com/xnaswp/download/|Official Download]]|
|RockStor|FREE|openSUSE|X86&ARM&2GBRAM|least 16GB|√|X|√|[[https://rockstor.com/dls.html|Official Download]]|
|U-NAS|FREE|Debian|X86|least 8GB|√|√|√|[[http://www.u-nas.cn/service-support.html|Official Download]]|
|iStoreOS|FREE|OpenWRT|X86&ARM|-|√|√|√|[[https://fw.koolcenter.com/iStoreOS/|Official Download]]|