Funambol provides open source syncronization tool for email contacts & calendars for mobile devices and Outlook clients.

Open source platform for mobile operators, device manufacturers and internet companies makes it easy to sync rich media with billions of mobile phones and connected devices. Funambol syncs this data with billions of phones and with thousands of applications and online services. It doesnt matter if you use Gmail, Yahoo!, AOL, Hotmail, Outlook or Thunderbird, with Funambol, you can sync your email & PIM on many mobile handsets.

To set up the Funambol mobility server, we have to download the Funambol Bundle which contains various services like Apache Tomcat and the Funambol server program itself. Furthermore the Open-Xchange plugin is required. Both packages are available for free download.

Funambol Features:
1. Funambol Data Synchronization Server: a mobile server providing synchronization services for mobile devices and PC software, as well as push email abilities.
2. Funambol Connectors: interfaces to various email systems, databases, file systems and applications, for bidirectional data synchronization.
3. Funambol Clients: client program applications that enable users to synchronize email and PIM data (contacts, calendar, tasks and notes) between a wide range of mobile devices and the Funambol server.
4. Funambol Software Development Kit (SDK): a suite of tools to develop sometimes-connected mobile applications on devices in Java (J2SE and J2ME) and C++, and to add data sources to the server.
5. Funambol Administration Tool: a simple graphic tool to administer Funambol installations.
6. Funambol Device Management: an OMA DM server to remotely manage mobile devices.

The license of this software is Free, you can free download and free use this phone software.