🔀 You can use the Line tool in Google Slides to create flowcharts and mind maps! pic.twitter.com/eiCVl7hqrX— Tony Vincent (@tonyvincent) June 18, 2018
For those who would like a video overview of how to make a flowchart or mind map in Google Drawings, I have one for you.
You can do a similar thing in Google Slides and in PowerPoint.
Connected Mind is a free mind mapping tool that you can use in your web browser and is also available as an iOS app and as an Android app.
Finally, Padlet offers a nice feature that will let you collaboratively create flowcharts.