Inaugural Words from The New York Times, I believe, is one of the more useful resources that have been created for the Inauguration.
“Word clouds” highlighting the most-used words in each inaugural address can be seen. In addition, words that were used in each address much more than in the other ones given in history are identified. Plus, by clicking on each word you are shown how it was used in a sentence.
Comparing the words and even just using them as a vocabulary-building exercise for English Language Learners make this an excellent resource.
The Times has also created what is probably the coolest looking interactive map of the Inaugural parade route.
Of course, I’m adding them to The Best Sites For Learning About The Presidential Inauguration.