Spellingcity.com is a free spelling website that makes teaching spelling exciting. SpellingCity provides students a simple online way to take a practice spelling test.
Tagxedo turns words into a visually stunning tag cloud, words individually sized appropriately to highlight the frequencies of occurrence within the body of text.
WORD Sift is a site that allows you to paste in a passage of text and create a visualisation of the word frequency. Word Sift allows the user to click the word to feed a visual thesaurus.