Which tools are essential for a successful project manager?

I'd like to say the project manager should have a positive drive.
of course , Another factors like brainstorming, planning , communication skill are essential basically but last thing you have to remember is carrying forward project powerfully and lead them.

I would say the brains :)

To work with others as team work , achieve the project (target , budget , timetable) , good product quality , cooperate with all department related to the project , can pass all difficulties with optimum solution (min.
cost , max.
benefit)

Proper Planning, brainstorming, Coordination and strong follow up with stake holders.
If you can do above things then you can become a successful Project Manager.

Essential tools in my opinion are brainstorming the ones who can use this tool successfully can bring up great ideas .
A project management software MS project an easy and straightforward software to manage the project efficiently.last but not least project management template and I mean simple ones with simple questions to cover all project stages.

Integration of all activities in an efficient & effective manner to have successful project