You can make a flow chart in Google Docs in a couple of ways. Here's what you can do with the native Google Drawing and third-party options.

ClickCharts is a free flowchart, process flow, charting and diagram maker software for Windows PC. Download it free for home use.

If you have access to the desktop version of Visio, you can send the diagram from the web app, just like opening a document into any other Office app.