Text Cleaner: Text cleaner is an all-in-one text cleaning and text formatting online tool that can perform many simple and complex text operations including format text, remove line breaks, strip HTML, Convert case, and find and replace text online.

OpenRefine is a powerful free, open source tool for working with messy data: cleaning it; transforming it from one format into another; and extending it with web services and external data.

(Originally Google Refine)