GO Contact Sync Mod - GO Contact Sync Mod is an open source tool to synchronize your Microsoft Outlook contacts with...
iCloud - iCloud is cloud service done right. It stores your music, photos, apps, calendars, documents, and more. And wirelessly pushes them to all your devices.
Outlook CalDav Synchronizer - Free Outlook Plugin, which synchronizes events, tasks and contacts between Outlook and Google...
Tutanota - Get your encrypted mailbox for free.
Outlook Google Calendar Sync - Offers calendar synchronisation between Outlook and Google, including attendees and reminders.
GoodSync - GoodSync provides highly reliable file backup and synchronization for both individuals and businesses.