MyHeritage improves on the Soundex algorithm by introducing Megadex�.
Megadex� combines the power of spelling variations while searching thousands of genealogical databases simultaneously. The Megadex� search covers all major genealogy databases on the Web (even those that don't support any 'sounds like' features). It will not return the typical Soundex false positives, and it will not miss out so many good matches like Soundex.
The Megadex� search combines the power of over 1,400 genealogy databases with spelling variations and is the most powerful genealogical search on the web.