Seafile is cloud storage service to hold your files.It’s your private cloud server. And you can run it on your Odroid, I just tested this myself.Since there’s no mention about Seafile on this forum, I searched web, and successfully installed from tutorial for Raspberry PI.
I did not find the right solution from the internet.
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I don’t know if I understood your question, but if you had asked why there’s no tutorial there might an answer is:
You could install the raspi version on nearly all ARM devices with debian. They just write raspi because there is standard platform and OS for ARM SoCs, so they have to test it on every device. And if they only test it on the pi, they only can write that’s for raspi.