I Voyant Tools: See Through Texts
https://voyant-tools.org/
Voyant with Far From The Madding Crowd Visualization
II Google N-Gram Viewer
https://books.google.com/ngrams
III HathiTrust Bookworm
https://bookworm.htrc.illinois.edu/develop/
IV Gephi–Great for Visualizing Networks
https://gephi.org/
Screenshots of what you can build with gephi: https://gephi.org/screenshots/
Tutorial and Quick Start Guide to Gephi:
https://gephi.org/users/
Ryan Cordell’s User’s Guide to Gephi
V RAW Graphs:
http://rawgraphs.io/