Omnia Turris have more nic`s than PC Engines APU, a its looks not realy to be possible to use it depend on not realy usable webinterface, for not programmer. How about other operating systems ?
Debian:
Compatibility: https://wiki.debian.org/InstallingDebianOn/TurrisOmnia
https://blog.kleine-koenig.org/ukl/installing-debian-stretch-on-a-turris-omnia.html
https://wiki.debian.org/InstallingDebianOn/TurrisOmnia
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=289324&highlight=turris
Make Debian
supports some ARM CPU on this time, dont no support Omnia Turris ARM
https: //forum.turris.cz/t/pfsense-as-router-os/48
Proxmox:
https : //forum.proxmox.com/threads/arm-future-of-proxmox.37991/
Alternate:
Should be possible to install after install ARM compatible Debian at first:
https://pve.proxmox.com/wiki/Installation
Open-WRT compatibility:
Should be possible in generell, becaus Omnia based on Open WRT.
https://wiki.openwrt.org/toh/start
Tecnical Data: https://wiki.openwrt.org/toh/hwdata/turris/turris_turris_omnia A still no original Open WRT found. And its looks Turris Omnia still didnt give back to Open wrt.
Supportted devices: https://openwrt.org/toh/start
DD-WRT compatibility:
http://svn.dd-wrt.com/changeset/35113
https://www.dd-wrt.com/forum/viewtopic.php?t=287348&sid=b16b91055aaaa8f30895413f4deea145
Tomato
not clear on this time
pfsence/OPNsense compatibility
looks like not supportetr on this time
a one pfsence programmer offer to make working if he get one hardware for free
https: //forum.turris.cz/t/pfsense-as-router-os/48
IP Fire:
looks like not possible on this time
Forum: https://forum.ipfire.org/search.php?keywords=Omnia
pfSense as router OS?
Free BSD:
https://wiki.freebsd.org/FreeBSD/arm
Untangle NG Firewall:
Demo http://demo.untangle.com/admin/index.do
Features https://www.untangle.com/untangle-ng-firewall/software-packages/
Supported Routers https://wiki.untangle.com/index.php/Firmware
Wiki https://wiki.untangle.com/index.php/Turris_Omnia
Source https://sourceforge.net/projects/untangle/
Forum https://forums.untangle.com/
Download https://wiki.untangle.com/index.php/Downloads
Install How To: https://wiki.untangle.com/index.php/Turris_Omnia#Installing_the_Untangle_firmware
Who know alternate Firmware which make the router hardware usable for non programmer ?
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See also:
Turris Omnia, List of Software featurure requests:
Collecting Ideas for Hardware changings:
Improve Turris Omnia together and speak about: