Technology

Z-Push is an open-source application to synchronize ActiveSync compatible devices such as mobile phones, tablets and mobile phones. With a history of over 6 years of successful synchronization with multiple backends Z-Push is the leading open source push synchronization.

Mobile data synchronization is becoming increasingly important for many people, and various standards have arisen to perform this two-way copying ‘over-the-air’. The most important platforms that can do wireless synchronisation are ActiveSync that is used to communicate with Exchange Server and Research-in-Motion’s BlackBerry Enterprise Server (BES). Both solutions require proprietary server-side software from the vendor, therefore limiting the use of PIMs (personal information managers) to either wired synchronization or irritating 3rd-party synchronizers requiring the installation of client software on the PDA.

This is where Open source Z-Push comes in; it is an implementation of Microsoft’s ActiveSync protocol which is used ‘over-the-air’ for multi platform active sync devices, including Windows Mobile and active sync used on Apple’s iPhone, Sony Ericsson and Nokia phones. Open source Z-Push enables any PHP-based groupware package to become fully syncable with any ActiveSync-compliant device.

Being an opensource project under the GPL, it allows developers to add their own backend so that Z-Push can communicate with their groupware solution.

Currently, Z-Push is available with four backends: the IMAP and the maildir backend for e-mail synchronisation, the vCard backend for contact synchronisation and one for the Zarafa package which allows full synchronization of E-mail, Calendar, Contacts and Tasks. We expect that other backends arise in the near future as the opensource community gets the grips with the new possibilities.

Z-Push was developed and tested with the Apache2 Webserver and PHP. There are also known implementations running with nginx, lighttpd.

Zarafa

Z-Push was initially developed by Zarafa Deutschland GmbH (Germany).