A free version of ClickCharts Diagram & Flowchart Software is available for non-commercial use. If you are using ClickCharts at home, you can download the free version here.

Under “File” → “Download,” you can download a version of your spreadsheet and Gantt chart as a PDF, Microsoft Excel, OpenDocument and other formats. Gantt Chart Template for Google Sheets ...

True to its name, Lovely Charts gives you the tools to build slick-looking diagrams -- right inside your browser. No software to install, no money to spend (unless you want extra features).