Microsoft Teams
Remote office, includes video conferencing system
[Free for institutions]
Trello
Organise collaborative work
[Free]
Airtable
Flexible spreadsheet/database with templates.
[Free with limited features, plans with additional features available from $10/mo]
Milanote
Milanote is an easy-to-use tool to organize your ideas and projects into visual boards. Designed for photographers, film makers, productor, designers, marketers etc.
[Free]
  File sharing and online file servers:
WeTransfer, Box, Google Drive, DropBox, OneDrive