Outlook Google Calendar Sync - Offers calendar synchronisation between Outlook and Google, including attendees and reminders.

Weekdone - Market leader and innovator since 2013. Set structured quarterly goals, keep track of activities, and focus on getting real business results. Track weekly progress, provide feedback, and move everyone in a unified direction.

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.

Quantive - The best platform for turning strategy into results.

EteSync - Secure, end-to-end encrypted and journaled personal information synchronization.

Workboard - Workboard is a performance and productivity app managers use with their teams to share goals, priorities, actions and feedback.