[Raion]

I've been busy all week so I've not had the inclination to respond with a quality response.

In absence of getting multiple origins together, your best applications for it are gonna be as follows:

Retro styled intranet site. It comes with sgi_apache or else I would honestly recommend a more modern web like thttpd.

NFS server. IRIX has a very good and easy to use NFSv3 implementation (it has no nfsv4) and you could run it as a server for that.

Beyond that there is also the option of running things like naemon/nagios or whatever but you will more than likely have to build that stuff because the stuff that is out there is pretty ancient.