The best NAS alternative to TrueNAS is openmediavault, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to TrueNAS and 13 are NAS Systems so hopefully you can find a suitable replacement. Other interesting NAS System alternatives to TrueNAS are XigmaNAS, Unraid, Rockstor and Amahi Home Server.
openmediavault is the next generation network attached storage (NAS) solution based on Debian Linux. It contains services like SSH, (S)FTP, SMB/CIFS, DAAP media server, RSync, BitTorrent client and many more. It can be enhanced via plugins.
Faster and lighter weight than FreeNAS.
XigmaNAS (formerly NAS4Free) is an embedded Open Source Storage NAS (Network-Attached Storage) distribution based on FreeBSD. This project is a continuation of TrueNAS 7 series project.
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.
adding more disks is much easier than freenas. i have implemented it for client.
The Amahi Home Server is designed for home and small office environments where the technical support staff do not want the job!
Western Digital My Cloud is an easy-to-use personal cloud storage device that plugs directly into your Wi-Fi router at home so you can preserve your digital life. Use the My Cloud app on your phone, tablet or computer to access it anywhere without paying a subscription fee.
Not applicable for Independent hardware. More similar to products from QNAP and Synology.
A napp-it is a high-quality block- and filestorage on common and favourable server hardware from ex. DataOn, Dell, HP or SuperMicro paired with a solid server OS (preferable Omnios/ OI/ Solaris but now with ZFS and job/ snap management on Linux) with an easy online installer...
Open-E Data Storage Software V7 SOHO (Small Office Home Office) is a free version of Open-E DSS V7, previously known as Open-E DSS V7 Lite. With SOHO, you can take advantage of basic functionalities of our fully featured NAS / SAN software...
What is EON? Embedded Operating system/Networking is a small operating system, built on Solaris, designed to store any amount of digital data on Intel/AMD (x86) hardware, using the amazing, enterprise class Zettabyte File System.
Why use EON? Because it offers rock solid, reliab.
United States
I use it for over three years now without any major problem. It's based on Debian and very stable. The interface is smooth and all works great. I use OMV for backup, file server, media server (DLNA), downloads (YT and torrent) and it performs and extra virus scan on all my files.