At my company we use Asana and Slack for 99% of our online communication.
I hate Asana. It's like trying to be productive by screen sharing someone else's cluttered folder-centric Windows 95 desktop "organization system". Running on a 386SX. This despite some smart folks putting a fair amount of effort into figuring out how to best use it.
UI/UX is very very outdated. Mobile app is... a nuisance. The overall responsiveness is very mediocre.