OwnCloud Switches from PHP to Go
owncloud.com
owncloud.com
But it wont't be possible to run it on a cheap shared Host since the usually don't support running arbitrary binaries. I think they are aiming towards a more professional/corporate customer base. But since nextcloud is still a thing its not a big loss for the average nerd.
These are drop-in replacements for the stock packages that don't break dependencies.