Vivisimo released a mobile version of Clusty called Clusty Mobile.
"Typing and retyping search terms and phrases is often the greatest pain point for mobile searchers because the speed and accuracy of typing on mobile devices is limited by the small keyboard. To alleviate this pain, Clusty Mobile offers a new navigational interface that includes a list of topics, or clusters, at the top of the search results page that are related to the user's search query"
At the bottom of the page Clusty Mobile is offering alternative spelling for mistyped words and suggests related queries to your searches.
Via: Search Engine Land