As of 23-06-2025, 4.6TB free space. Could start by reserving 1TB, which would provide enough storage for 20×50GB for guests users, which would be plenty for a long time. Tenma also hosts a copyparty instance that could be opened to the public to some extent or another.

Tenma has full web hosting infrastructure set up (hosting this blog among other things), so that would be easy to extend to other people as well.

In line with the previous 2 points; compute resources are currently underutilized.

Tenma runs a Wireguard VPN network. You can use this to, for instance, access services between two connected devices without having to open them up to the wider internet.

Tenma runs a fully resolving DNS server, with some local entries for devices on the VPN network. This should probably be automated in some way, and the service should be augmented with DNSSEC before opening.

Tenma has a Gitea instance

Tenma has infrastructure proven capable of restreaming 1080p video and high quality audio to at least ~100 people although this is CPU intensive and requires activating a high bandwidth restreaming VPS that is usually kept disabled to save costs.

Some other services that currently run on Tenma or have run there before:

• Vaultwarden Bitwarden-compatible password manager server
• Soju IRC bouncer
• Syncplay server
• Video game servers (think Minecraft, Terraria, …)