ZideOne is working on solutions which integrate contact, event and todo list servers with Microsoft Outlook™.

The core is a MAPI Message Store Provider which maintains a write-through offline cache on a remote HTTP server.

Unlike plain PST synchronization scripts our connectors directly write changes to the server in realtime, hence report server feedback immediatly. If the 'save' operation in Outlook returned successfully, you can be sure the data got accepted by the server.

Our core connectors synchronize Outlook data using the WebDAV, GroupDAV, CalDAV and CardDAV protocols. They utilize the vCard and iCalendar data formats to represent the data.

Outlook™ Connector for ScalableOGo

ScalableOGo (SOGo) is the free groupware software with a strong focus on massive scalability (60.000+ users). SOGo was designed and prototyped by the Skyrix Software AG and is currently being pushed forward by the excellent engineers of Inverse.
The ZideOne Connector for SOGo uses a combination of GroupDAV, CalDAV and CardDAV to integrate the SOGo addressbook and calendars into Outlook™.
This solution is a unique cross platform environment which can host Outlook clients, Mozilla clients as well as an AJAX web interface.

Outlook™ Connector for Apple CalendarServer

Starting with MacOS X 10.5 (Leopard) Apple includes the iCal Server in MacOS X Server. Even though it is usually used with Apple's iCal.app, iCal Server is a standards conforming CalDAV server with plenty of advanced features.
The ZideOne Connector for iCal Server uses advanced CalDAV to integrate the iCal calendars into Outlook™.