Google Refine is a power tool that allows you to load data, understand it, clean it up, reconcile it internally, and augment it with data coming from external sources, such as Freebase. All within the comfort and privacy of your own computer.
In 2012 the project was renamed to OpenRefine: https://www.ohloh.net/p/openrefine
These details are provided for information only. No information here is legal advice and should not be used as such.