
For me, personally, ActiveCollab is the best task management tool as I have been using it for the past 4 years. The UI is very user-friendly, and creating a new task and especially recurring tasks is the best option, as I have to deliver weekly reports to my clients, and I have never forgotten any report in the past 4 years, as the weekly and monthly tasks are automatically created and assigned to me.
The second best option is that we can edit messages in a limited time-frame, not whenever anyone wants it.
Thirdly, the "reassigning" option, which keeps everyone in the loop. Review collected by and hosted on G2.com.
For me, personally, ActiveCollab has helped me with almost everything I needed since I started using this tool.
I would say, nothing for me to dislike personally. Review collected by and hosted on G2.com.