Clearbit - Clearbit provides Business Intelligence APIs
Outlook Google Calendar Sync - Offers calendar synchronisation between Outlook and Google, including attendees and reminders.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
GO Contact Sync Mod - GO Contact Sync Mod is an open source tool to synchronize your Microsoft Outlook contacts with...
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.
gSyncit - gSyncit Outlook Cloud Synchronizer. Outlook Calendar, Contact, Task, Note Synchronizer supporting Google, Toodledo, Evernote, Informant, iCloud, AOL, Yahoo, Synology, Fruux, Memotoo and CalDav/CardDav services.