There is a really nice app for Mac OS X Server admins from Harlekins called Server Admin Remote. You can see more information about it at the Server Admin Remote website, here.
Basically, Server Admin Remote is a nice front end for a few serveradmin commands, showing which services are installed and the status of services. It also looks at server host names, CPU, network loads, service logs and some of the more important stats per service (ie – concurrent connections for AFP. Overall it’s a great little app for the Server Admin to quickly be able to restart a service or just look at statuses of services. It runs over port 311, so you’ll need that open on your servers (or to use the VPN client on the phone). You can also install multiple servers, although you’re not going to be looking at them all at once as you would be doing with Server Admin.
Overall it’s a great app, and other than SSH it will be one of the apps I personally use most! It only runs $4.99, which isn’t bad considering the amount of work that would go into parsing the serveradmin output to generate each of those screens. I can’t wait to see what they do with it next, so help fund future development by clicking on the link below to buy it: