Macminicolo presents: 50 ways to use your server:
OS X Server is the do-all Mail, web, wiki, etc from Apple.
Sendy is a self hosted service to email your newsletters at a significant discount. Similar to Mail Chimp. ($59)
Yourls is a self hosted URL shortener. It provides stats as well. (free)
ZPanel is an alternative to CPanel. (Free)
GitLab is a self hosted Git management software. (Free)
SparkleShare lets you set a folder on your server that will sync with all your peers or coworkers. A great way to collaborate on folders. (Free)
Pow lets you create a quick environment to build and test Rails apps. (Free)
Moodle is a CMS for education. Free
VirtualHostX lets you setup multiple websites quickly. ($39)
Crashplan lets you backup remote Macs to your Server. (Free)
Plex Server lets you play all your media to your phone/tablet/Macs. (Free)
FileMaker Server is a powerful database server. Very Powerful. Run it for yourself or as a paid service for others.
Kerio Connect is a powerful Mail server. A very good alternative to Exchange.
Run a Minecraft Server of your own.
Vagrant will help you create development environments quickly.
Real Studio will help you build a web app on your server.
uTorrent is a great torrent client. Also has a web remote.
Billings Pro Server lets you sync and track time from anywhere.
Profile Manager 2 will let you manage iPads and iPhones.
Put Xcode on your server and develop from anywhere.
MAMP will help you setup a wordpress blog quickly with PHP and mySQL.
Scrup is a self hosted alternative to Droplr or CloudApp
DNS Enabler lets you run your own DNS serve.
Kikuchat is a self hosted Campfire alternative. Server.app also has a Messages Server.
Mint is a self hosted analytics program to keep an eye on your site traffic.
Shaarli is a self hosted book mark manager similar to Delicious.
BBpress is clean forum software from the makers of wordpress. (Free)
Simon is an application that will check all sorts of servers and services. Similar to Pingdom.
iStat Server will let you keep an eye on your Mac server.
Deep Freeze will let you really hack on your machine, and bring it back clean with a restart.
Asterisk is an open source VOIP server. (free)
TFTP Server still comes in handy after all these years. (Free)
Nagios will keep an eye on your infastructure.
SugarCRM offers a free, self hosted version. It's a CRM for keeping track of clients, sales, support requests, etc.
Rapidweaver makes web site creation really simple, and works with the default web sharing in OS X.
Slogger will take your data from social networks and create entries in Day One.
Subversion is an open source version control system.
Lasso Server brings Lasso to the web.
Pancake is a seller self hosted app for invoicing and billing clients.
Thinkup will let you help you make all of your social networking more useful.
If you have something we should add to the list, I hope you'll let us know @macminicolo on twitter.