Normally I like to post content that I’ve actually written, but I can’t pass up linking to this article: How to write a spelling corrector. Its a great piece that explains the math behind the spelling correcting that Google, Yahoo, etc… do when you’re doing a search and gives code examples on how this is accomplished. Very great read!
This post is more than 18 months old. Since technology changes too rapidly, this content may be out of date (but that's not always the case). Please remember to verify any technical or programming information with the current release.