Pico is a fast, full featured mobile application for any Java (J2ME) or Symbian cellphone. Including full HTML Web browsing, feature-rich email, multimedia-enabled SMS, and an RSS feed reader, Pico combines all the rich functionality of PicoWeb, PicoMail, PicoSMS, and PicoRSS into a single application.
HordeZpush provides ActiveSync synchronisation between smartphones, PDAs, and Horde groupware. It is based on the Zpush project and adds backends that synchronize contacts and calendars with Horde. It has been tested with Horde 3.3.5, Kronolith 2.3.2, Turba 2.3.2, and Z-Push 1.2.1.
Address Book Server allows you to share your contacts and calendar events with others connected to your network or over the Internet. Each participant synchronizes their contacts with the server hosted on your own system. Address Book Server supports the full Address Book and iCal schema. The server also provides a friendly Web interface and an iPhone client which let you access your contact details remotely.