TeamHeadquarters

With many products on the market TeamHeadquarters aim to help you consolidate them all. You can include information from various sources onto one dashboard such as:

Google Calendar
Office Exchange Calendar

This makes management in general effortless since you don’t have to switch between programs.
In terms of Gantt charts you can have a broad overview or request certain information such as:

Overdue tasks
Complete projects

Pricing: SaaS: $28/user/month