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.
Sketchboard.io - Visual Remote Teamwork. Solve problems and create ideas on endless whiteboard with your teammates by sketching.
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Sharepoint Online - SharePoint is a secure place to store, organize, share, and access information from almost any device.
Slack - A messaging app for teams who see through the Earth!
Miro - Scalable, secure, cross-device and enterprise-ready team collaboration tool for distributed teams. Join 2M+ users & 8000+ teams from around the world.