OpenCloud is the continuation of ownCloud Infinite Scale, written in Go, with an Apache 2.0 server and no CLA. I set it up with Docker Compose, local storage, and NGINX Proxy Manager, then added Tika for full text search and Euro Office for document editing. Do note the NPM gotcha: turn off Block Common Exploits for that host or the desktop client fails with a 403.
TechHutSelf-Host OpenCloud with Docker Compose, and How It Compares to Nextcloud - TechHutSet up OpenCloud on your own domain with Docker Compose, local storage, and NGINX Proxy Manager, plus an honest look at how it stacks up against Nextcloud.