Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Planview Enterprise One - Planview Enterprise One is a simple yet powerful portfolio and resource management software that can be used deployed both on-premise and on the cloud.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Easy Projects - Online project management software. Best suited for IT projects, Operations & Marketing Teams. Comes with full implementation and training.
Slack - A messaging app for teams who see through the Earth!
iServer365 by OrbusSoftware - The Next Generation SaaS Platform for Architecting Your Digital Future.