Tagul is a free word cloud generator that offers one clear difference compared to other word cloud generators like Wordle. The difference between Wordle and Tagul is when you create a word cloud with Tagul, every word in your word cloud is linked to a Google search. Click on any word in your word cloud to be taken directly to a Google search results page for that word. Tagul creates a word cloud from text you copy into your Tagul account. Tagul will also generate a word cloud from any url you specify. Just as you can with other word cloud generators, Tagul allows you to specify words to ignore in creating your word clouds. Once your word cloud is created Tagul provides you with an embed code to put your cloud on your blog or website.
Applications for Education
I've seen quite a few people advocate for using Wordle word clouds to analyze chunks of text. Tagul could be used in the same way. The links to Google searches gives Tagul an additional tool that could help students analyze chunks of text.