What is the best team management software you have ever used?

Microsoft Teams at Enterprise Level that helps us create a more open, fluid, and digital environment.

There are variety of highly flexible, intelligent software platforms that enable diverse teams -- from software developers to graphic designers -- to more effectively allocate resources and quickly finish project management sloutions.

Never ever used . Wait for expert answers

I will wait for the answers from others as I have not used a team management system before.