Draw.io (https://www.draw.io/) is a free online tool similar to Visio, that allows you to make documents like flow charts. The tool has a few different option to save documents, including Google Drive, which I used. Below is an example of a flow chart created in Draw.io:
StormBoard (https://www.stormboard.com/main/tour) Digital collaborative whiteboard space.
Realtime Board (https://realtimeboard.com/features/) Another online virtual collaboration tool.
Random Team Generator (https://www.jamestease.co.uk/team-generator) Handy app for generating teams from a list of names that you input.