GanttPro: I like it.

At present I am using GanttPro myself to organise complex projects and keep track on tasks with crucial deadlines. In the past I have used it in collaboration with team members - across the whole organisation. It was particularly useful, as it allowed us to address not the need to observe deadlines per various projects and subprojects, but also to keep track on the very diverse tasks. It is perfect for event management, for research and report preparation and issuance. Also good for team members working in different locations or different time zones. Also, it lessens useless and time consuming communication and saves time.