Which is the best tool to start remote working during the global outbreak of COVID-19?

Truly an all-in-one remote workspace for team collaboration with tasks, notes, and video chat builtin.

Remote working is a trend. Time tracking, video conferencing, file sharing and others are very important features, however, I'd highlight the importance of task management here as the most critical need while working virtually. That's why I recommend using Hygger.io https://hygger.io/ that is perfect for remote work as it proposes a multifunctional toolkit for various purposes: handy Kanban boards, high-level shareable roadmaps, smart prioritization frameworks and many more.

If you need to make diagrams, try Gleek. It is a free text-to-diagram tool that you can use to create UML diagrams, flowcharts, but also mind maps and other types of diagrams. 👉 Try to type "Shape1-->Shape2" to get an idea