These are open source or free presentation or visual tools. Most require you to register and some are available for free for a trial period
- Google Books Ngram Viewer - When you enter phrases into the Google Books Ngram Viewer, it displays a graph showing how those phrases have occurred in a corpus of books (e.g., "British English", "English Fiction", "French") over the selected years.
- Google Drawings - make flow charts, diagrams, callouts - part of Google Drive
- Simply Analytics - Web-based mapping application to create thematic maps and reports.