The NetSpell project is a free spell checking engine written entirely in managed C# .net code. Suggestions for misspelled words are generated using phonetic (sounds like) matching and ranked by a typographical score (looks like). Also supports "ignore all" and "replace all" misspelled-word handling.

This section describes common spell checker customization issues.

Specify the spell checker dictionary folder

You can modify the web.config file and specify the NetSpell dictionary folder:

<appSettings>
    <add key="DictionaryFolder" value="bin"/>
</appSettings>