Jasmin SMS Gateway - Jasmin is a very complete open source SMS Gateway with many enterprise-class features such as:
SmartWindows.app - Auto arrange all your app windows, whether on one screen or many with a single click!
Kannel - Open Source WAP and SMS Gateway
SANeForce - SAN Pharma Sales Force Automation
Bulk SMS Services - Sending Bulk SMS to the customers will engage the customers with your business and new offers.
ReIcon - ReIcon is portable freeware that enables you to save and restore your desktop layout.