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Tableau is a great tool for all sorts of graphics/visualizations of data. It is also a very useful alternative to Project for making Gantt charts (connect to an Excel sheet, similar to guidelines at https://www.tableau.com/trial/gantt-chart-template?utm_campaign_id=2017049). Tableau is free for students with a .edu email address (https://www.tableau.com/academic/students).
- Visio-like software for Macs - (Lucidcharts) - This is a web-based SaaS tool that you can use to do diagrams. It's an application you can use through Google Docs. The free tier limits the amount of shapes and models you can make.
- GeoMapping functionality
- Here's an easier alternative to Google Maps - MapBox.com! Example: http://austinartmap.com/
- OpenStreetMap - create individual maps with static information; open source, free, low learning curve